title: ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¸ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° ÑÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð¸Ñ Ð¶Ð°ÑÐ¾Ð¿ÑÐ¾ÑÐ½ÑÑ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð¾Ð² Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ ÑÑÐ³Ð¾Ð¿Ð»Ð°Ð²ÐºÐ¸Ñ ÑÐ¾ÐµÐ´Ð¸Ð½ÐµÐ½Ð¸Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ Nb-Si
title: Ð½Ð°ÑÑÐ½ÑÐ¹ Ð´Ð¾ÐºÐ»Ð°Ð´
titleType: Subtitle
title: Research and development of high-temperature materials based on in-situ composites of the Nb-Si system
Creators: name: ÐÐ¾Ð½ÑÐ°ÑÐ¾Ð², ÐÐ²Ð°Ð½
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2019
Subjects: ÐµÑÑÐµÑÑÐ²ÐµÐ½Ð½ÑÐµ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÑ
Nb-Si
Ð¿Ð¾ÑÐ¾ÑÐºÐ¾Ð²Ð°Ñ Ð¼ÐµÑÐ°Ð»Ð»ÑÑÐ³Ð¸Ñ
Ð¼ÐµÑ Ð°Ð½Ð¸ÑÐµÑÐºÐ¾Ðµ Ð»ÐµÐ³Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
Ð¿Ð»Ð°Ð·Ð¼ÐµÐ½Ð½Ð°Ñ ÑÑÐµÑÐ¾Ð¸Ð´Ð¸Ð·Ð°ÑÐ¸Ñ
Ð°Ð´Ð´Ð¸ÑÐ¸Ð²Ð½ÑÐµ ÑÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸Ð¸
In-situ composites
powder metallurgy
mechanical alloying
plasma spheroidization
additive manufacturing

description: Ð¡Ð¾Ð²ÑÐµÐ¼ÐµÐ½Ð½ÑÐµ Ð¶Ð°ÑÐ¾Ð¿ÑÐ¾ÑÐ½ÑÐµ ÑÐ¿Ð»Ð°Ð²Ñ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð½Ð¸ÐºÐµÐ»Ñ Ð¸Ð¼ÐµÑÑ ÑÐ°Ð±Ð¾ÑÐ¸Ðµ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÑ Ð¿Ð¾ÑÑÐ´ÐºÐ° 1100-1150Â°C, ÑÑÐ¾ ÑÐ¾ÑÑÐ°Ð²Ð»ÑÐµÑ 0.8-0.85 Ð¾Ñ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÑ Ð¿Ð»Ð°Ð²Ð»ÐµÐ½Ð¸Ñ. ÐÐ°Ð¼ÐµÐ½Ð¾Ð¹ Ð½Ð¸ÐºÐµÐ»ÐµÐ²ÑÐ¼ ÑÐ¿Ð»Ð°Ð²Ð°Ð¼ Ð¼Ð¾Ð³ÑÑ ÑÑÐ°ÑÑ ÐµÑÑÐµÑÑÐ²ÐµÐ½Ð½ÑÐµ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÑ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ ÑÐ¸ÑÑÐµÐ¼Ñ Nb-Si. ÐÐ±ÑÐµÐºÑÐ¾Ð¼ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐ²Ð»ÑÐµÑÑÑ ÐµÑÑÐµÑÑÐ²ÐµÐ½Ð½ÑÐ¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸Ñ ÑÐ¸ÑÑÐµÐ¼Ñ Nb-Si, ÐºÐ¾ÑÐ¾ÑÑÐ¹ ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÐµÑÑÑ Ð² ÐºÐ°ÑÐµÑÑÐ²Ðµ ÐºÐ°Ð½Ð´Ð¸Ð´Ð°ÑÐ° Ð½Ð° Ð·Ð°Ð¼ÐµÐ½Ñ Ð½Ð¸ÐºÐµÐ»ÐµÐ²ÑÐ¼ Ð¶Ð°ÑÐ¾Ð¿ÑÐ¾ÑÐ½ÑÐ¼ ÑÐ¿Ð»Ð°Ð²Ð°Ð¼.Ð ÑÐ°Ð¼ÐºÐ°Ñ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ Ð±ÑÐ»Ð¸ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ñ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½ÑÐµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¿ÑÐ¾ÑÐµÑÑÐ° ÑÐ¸Ð½ÑÐµÐ·Ð° ÐµÑÑÐµÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ° Ð½Ð° Ð±Ð°Ð·Ðµ ÑÐ¸ÑÑÐµÐ¼Ñ Nb-Si Ð°Ð´Ð´Ð¸ÑÐ¸Ð²Ð½Ð¾Ð¹ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¹ Ð¿Ð¾ÑÐ»Ð¾Ð¹Ð½Ð¾Ð³Ð¾ Ð½Ð°Ð½ÐµÑÐµÐ½Ð¸Ñ ÑÐ²ÑÐ·ÑÑÑÐµÐ³Ð¾.
Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ ÑÐ°Ð±Ð¾ÑÑ, Ð±ÑÐ»Ð¸ Ð¿Ð¾Ð»ÑÑÐµÐ½Ñ Ð¾Ð±ÑÐ°Ð·ÑÑ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ° Nb-Si Ð¿ÑÑÑÐ¼ Ð½Ð°Ð½ÐµÑÐµÐ½Ð¸Ñ Ð¾ÑÐ³Ð°Ð½Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ²ÑÐ·ÑÑÑÐµÐ³Ð¾ Ð½Ð° Ð¿Ð¾ÑÐ¾ÑÐºÐ¾Ð²ÑÑ Ð¼Ð°ÑÑÐ¸ÑÑ ÑÑÐµÑÐ¾Ð¸Ð´Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð³Ð¾ Ð¿Ð¾ÑÐ¾ÑÐºÐ° Nb, Ñ Ð¿Ð¾ÑÐ»ÐµÐ´ÑÑÑÐ¸Ð¼ Ð²ÑÐ¶Ð¸Ð³Ð°Ð½Ð¸ÐµÐ¼ ÑÐ²ÑÐ·ÑÑÑÐµÐ³Ð¾ Ð¸Ð· Ð³ÑÐ¸Ð½-Ð¼Ð¾Ð´ÐµÐ»Ð¸, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¸Ð½ÑÐ¸Ð»ÑÑÑÐ°ÑÐ¸ÐµÐ¹ ÑÐ°ÑÐ¿Ð»Ð°Ð²Ð»ÐµÐ½Ð½ÑÐ¼ ÐºÑÐµÐ¼Ð½Ð¸ÐµÐ¼. ÐÐ¸ÐºÑÐ¾ÑÑÑÑÐºÑÑÑÐ° Ð¿Ð¾Ð»ÑÑÐµÐ½Ð½ÑÑ Ð¾Ð±ÑÐ°Ð·ÑÐ¾Ð² ÑÐ¾ÑÑÐ¾Ð¸Ñ Ð¸Ð· ÑÐ¸Ð»Ð¸ÑÐ¸Ð´Ð° NbSi2, ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð² Ð¼Ð°ÑÑÐ¸ÑÐµ Si.
Ð Ð¿ÑÐ¾ÑÐµÑÑÐµ Ð¸Ð½ÑÐ¸Ð»ÑÑÑÐ°ÑÐ¸Ð¸, Ð²ÐµÑÑ Ð½Ð¸Ð¾Ð±Ð¸Ð¹ Ð³ÑÐ¸Ð½ Ð¼Ð¾Ð´ÐµÐ»Ð¸ Ð¿ÑÐ¾ÑÐµÐ°Ð³Ð¸ÑÐ¾Ð²Ð°Ð» Ñ ÑÐ°ÑÐ¿Ð»Ð°Ð²Ð»ÐµÐ½Ð½ÑÐ¼ ÐºÑÐµÐ¼Ð½Ð¸ÐµÐ¼ Ð¿Ð¾ ÑÐµÐ°ÐºÑÐ¸Ð¸ Nb+SiâNbSi2
Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ° Ð±ÑÐ»Ð¾ ÑÑÑÐ°Ð½Ð¾Ð²Ð»ÐµÐ½Ð¾, ÑÑÐ¾ ÐºÐ»ÑÑÐµÐ²ÑÐ¼ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¾Ð¼ ÑÐ¸Ð½ÑÐµÐ·Ð° ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð° Ð½Ð° Ð±Ð°Ð·Ðµ Nb-Si ÑÐ²Ð»ÑÐµÑÑÑ ÐºÐ¾Ð»Ð¸ÑÐµÑÑÐ²Ð¾ Si, Ð¿Ð¾Ð´Ð°Ð²Ð°ÐµÐ¼Ð¾Ð³Ð¾ Ð² Ð¿Ð¾ÑÐ¾ÑÐºÐ¾Ð²ÑÑ Ð¼Ð°ÑÑÐ¸ÑÑ.
ÐÐ±ÑÐ°Ð·ÐµÑ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ° ÑÐ¾ÑÑÐ°Ð²Ð° Nb-16Si (Ð°Ñ.%) Ð±ÑÐ» Ð¿Ð¾Ð»ÑÑÐµÐ½ Ð¿ÑÑÐµÐ¼ Ð¿Ð¾ÑÐ»Ð¾Ð¹Ð½Ð¾Ð³Ð¾ Ð½Ð°Ð½ÐµÑÐµÐ½Ð¸Ñ ÑÐ²ÑÐ·ÑÑÑÐµÐ³Ð¾ Ñ Ð¿Ð¾ÑÐ»ÐµÐ´ÑÑÑÐ¸Ð¼ ÑÐ¿ÐµÐºÐ°Ð½Ð¸ÐµÐ¼ Ð½Ð° Ð¼ÐµÑÐ°Ð½Ð¸ÑÐµÑÐºÑÑ ÑÐ¼ÐµÑÑ Ð¿Ð¾ÑÐ¾ÑÐºÐ¾Ð². Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ Ð¿Ð¾Ð»ÑÑÐµÐ½ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ¸Ð¾Ð½Ð½ÑÐ¹ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð», Ð¼Ð¸ÐºÑÐ¾ÑÑÑÑÐºÑÑÑÐ° ÐºÐ¾ÑÐ¾ÑÐ¾Ð³Ð¾ Ð²ÑÑÐ°Ð¶ÐµÐ½Ð° ÑÐ°Ð·Ð°Ð¼Ð¸ Nb3Si, NbSi2 Ð¸ Si.
ÐÐ¾Ð¼Ð¸Ð¼Ð¾ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ð¹ Ð¿ÑÐ¾ÑÐµÑÑÐ° Ð¿Ð¾ÑÐ»Ð¾Ð¹Ð½Ð¾Ð³Ð¾ Ð½Ð°Ð½ÐµÑÐµÐ½Ð¸Ñ ÑÐ²ÑÐ·ÑÑÑÐµÐ³Ð¾ Ñ Ð¸Ð½ÑÐ¸Ð»ÑÑÑÐ°ÑÐ¸ÐµÐ¹, Ð±ÑÐ»Ð¾ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¾ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¿Ð¾ ÑÐ¸Ð½ÑÐµÐ·Ñ Ð¿Ð¾ÑÐ¾ÑÐºÐ¾Ð²ÑÑ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð¾Ð² Ð½Ð° Ð±Ð°Ð·Ðµ ÐµÑÑÐµÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ° ÑÐ¸ÑÑÐµÐ¼Ñ Nb-Si Ð¿ÑÑÑÐ¼ Ð¼ÐµÑÐ°Ð½Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð»ÐµÐ³Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ñ Ð¿Ð¾ÑÐ»ÐµÐ´ÑÑÑÐµÐ¹ Ð¿Ð»Ð°Ð·Ð¼ÐµÐ½Ð½Ð¾Ð¹ ÑÑÐµÑÐ¾Ð¸Ð´Ð¸Ð·Ð°ÑÐ¸ÐµÐ¹.
Ð ÑÐµÑÐµÐ½Ð¸Ðµ Ð¼ÐµÑÐ°Ð½Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð»ÐµÐ³Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÐ½Ð°ÑÐ°Ð»Ð° ÑÐ¾ÑÐ¼Ð¸ÑÑÐµÑÑÑ ÑÐ»Ð¾Ð¸ÑÑÐ°Ñ Ð½ÐµÐ¾Ð´Ð½Ð¾ÑÐ¾Ð´Ð½Ð°Ñ Ð¼Ð¸ÐºÑÐ¾ÑÑÑÑÐºÑÑÑÐ° Ñ Ð²ÑÑÐ°Ð¶ÐµÐ½Ð½ÑÐ¼Ð¸ Ð¾Ð±Ð¾Ð³Ð°ÑÐµÐ½Ð½ÑÐ¼Ð¸ Ð·Ð¾Ð½Ð°Ð¼Ð¸ Ð¸ÑÑÐ¾Ð´Ð½ÑÑ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ¾Ð², Ð½Ð¾ Ñ ÑÐ²ÐµÐ»Ð¸ÑÐµÐ½Ð¸ÐµÐ¼ Ð²ÑÐµÐ¼ÐµÐ½Ð¸ Ð¿ÑÐ¾ÑÐµÑÑÐ°, Ð¼Ð¸ÐºÑÐ¾ÑÑÑÑÐºÑÑÑÐ° Ð³Ð¾Ð¼Ð¾Ð³ÐµÐ½Ð¸Ð·Ð¸ÑÑÐµÑÑÑ Ð¸ ÑÐ¾ÑÐ¼Ð¸ÑÑÑÑÑÑ Ð¿Ð¾ÑÐ¾ÑÐºÐ¸ Ñ ÑÐ°Ð²Ð½Ð¾Ð¼ÐµÑÐ½ÑÐ¼ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸ÐµÐ¼ ÑÐ¸Ð¼Ð¸ÑÐµÑÐºÐ¸Ñ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ¾Ð² Ð² Ð¾Ð±ÑÐµÐ¼Ðµ ÑÐ°ÑÑÐ¸ÑÑ Ð¿Ð¾ÑÐ¾ÑÐºÐ°. ÐÐ´Ð½Ð°ÐºÐ¾ Ñ ÑÐ²ÐµÐ»Ð¸ÑÐµÐ½Ð¸ÐµÐ¼ Ð²ÑÐµÐ¼ÐµÐ½Ð¸ Ð¼ÐµÑÐ°Ð½Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð»ÐµÐ³Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ, Ñ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð¼Ð¾Ð¼ÐµÐ½ÑÐ°, ÑÑÑÐ°Ð½Ð¾Ð²Ð»ÐµÐ½Ð¾ â 300 Ð¼Ð¸Ð½ÑÑ, Ð² Ð¿Ð¾ÑÐ¾ÑÐºÐ°Ñ ÑÐµÐ·ÐºÐ¾ ÑÐ²ÐµÐ»Ð¸ÑÐ¸Ð²Ð°ÐµÑÑÑ ÑÐ¾Ð´ÐµÑÐ¶Ð°Ð½Ð¸Ñ Fe, ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÑÑÑÐµÐ³Ð¾ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¾Ð¼Ñ Ð·Ð°Ð³ÑÑÐ·Ð½ÐµÐ½Ð¸Ñ ÑÑÐµÐ½ÐºÐ°Ð¼Ð¸ ÑÐµÐ°ÐºÑÐ¾ÑÐ° Ð¸ ÑÐ°Ð·Ð¼Ð¾Ð»ÑÐ½ÑÐ¼Ð¸ ÑÐµÐ»Ð°Ð¼Ð¸.
Ð Ð¿ÑÐ¾ÑÐµÑÑÐµ Ð¼ÐµÑÐ°Ð½Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð»ÐµÐ³Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ, Nb Ð¸ÑÐ¿ÑÑÑÐ²Ð°ÐµÑ Ð²ÑÑÐ¾ÐºÐ¸Ðµ Ð¿Ð»Ð°ÑÑÐ¸ÑÐµÑÐºÐ¸Ðµ Ð´ÐµÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¸, ÐºÐ¾ÑÐ¾ÑÑÐµ Ð¿ÑÐ¸Ð²Ð¾Ð´ÑÑ Ðº Ð¸ÑÐºÐ°Ð¶ÐµÐ½Ð¸Ñ ÐºÑÐ¸ÑÑÐ°Ð»Ð»Ð¸ÑÐµÑÐºÐ¾Ð¹ ÑÐµÑÐµÑÐºÐ¸, ÑÐ²ÐµÐ»Ð¸ÑÐµÐ½Ð¸Ñ Ð´Ð¸ÑÐ»Ð¾ÐºÐ°ÑÐ¸Ð¹, Ð² ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ ÑÐµÐ³Ð¾ ÑÐ²ÐµÐ»Ð¸ÑÐ¸Ð²Ð°ÐµÑÑÑ ÐºÐ¾Ð»Ð¸ÑÐµÑÑÐ²Ð¾ ÑÑÐ±Ð·ÐµÑÐµÐ½ Ð¸ Ð¿Ð»Ð¾ÑÐ°Ð´Ñ Ð³ÑÐ°Ð½Ð¸Ñ ÑÑÐ±Ð·ÐµÑÐµÐ½. Ð¡ ÑÐ²ÐµÐ»Ð¸ÑÐµÐ½Ð¸ÐµÐ¼ ÐºÐ¾Ð»Ð¸ÑÐµÑÑÐ²Ð° ÑÑÐ±Ð·ÐµÑÐµÐ½ Ð´Ð¾ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð·Ð½Ð°ÑÐµÐ½Ð¸Ñ, ÑÑÐ±Ð·ÐµÑÐ½Ð° ÑÑÐ°Ð½ÑÑÐ¾ÑÐ¼Ð¸ÑÑÑÑÑÑ Ð² Ð·ÐµÑÐ½Ð°. ÐÐ°Ð½Ð½ÑÐ¹ Ð¼ÐµÑÐ°Ð½Ð¸Ð·Ð¼ ÑÑÐ°Ð½ÑÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¸ Ð²ÐµÐ´ÐµÑ Ðº Ð¸Ð·Ð¼ÐµÐ»ÑÑÐµÐ½Ð¸Ñ Ð·ÐµÑÐµÐ½, Ð´ÐµÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¸ ÐºÑÐ¸ÑÑÐ°Ð»Ð»Ð¸ÑÐµÑÐºÐ¾Ð¹ ÑÐµÑÐµÑÐºÐ¸, ÑÑÐ¸ÑÐµÐ½Ð¸Ñ Ð¸ ÑÐ¼ÐµÐ½ÑÑÐµÐ½Ð¸Ñ Ð¸Ð½ÑÐµÐ½ÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ Ð´Ð¸ÑÑÐ°ÐºÑÐ¸Ð¾Ð½Ð½ÑÑ Ð¿Ð¸ÐºÐ¾Ð² Nb. Ð ÑÐ¾ Ð¶Ðµ Ð²ÑÐµÐ¼Ñ, Ð°ÑÐ¾Ð¼Ñ Ti,Cr,Al Ð¸ Si Ð¿ÐµÑÐµÑÐ¾Ð´ÑÑ Ð² Ð´ÐµÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ ÑÐµÑÐµÑÐºÑ Nb, Ð¸ ÑÐ¾ÑÐ¼Ð¸ÑÑÑÑ Ð¾Ð±ÑÐ°Ð·ÑÑÑ ÑÐ²ÑÑÐ´ÑÐ¹ ÑÐ°ÑÑÐ²Ð¾Ñ, ÑÐ²ÐµÐ»Ð¸ÑÐ¸Ð²Ð°Ñ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑ ÑÐµÑÐµÑÐºÐ¸ Nb, ÑÑÐ¾ Ð¿ÑÐ¸Ð²Ð¾Ð´Ð¸Ñ Ðº ÑÐ´Ð²Ð¸Ð³Ñ Ð´Ð¸ÑÑÐ°ÐºÑÐ¸Ð¾Ð½Ð½ÑÑ Ð¿Ð¸ÐºÐ¾Ð² Ð² ÑÑÐ¾ÑÐ¾Ð½Ñ Ð¼Ð°Ð»ÑÑ ÑÐ³Ð»Ð¾Ð².
ÐÐ¾ÑÐ»Ðµ Ð¿Ð»Ð°Ð·Ð¼ÐµÐ½Ð½Ð¾Ð¹ ÑÑÐµÑÐ¾Ð¸Ð´Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð¿Ð¾ÑÐ¾ÑÐºÐ¾Ð² ÑÐ¸ÑÑÐµÐ¼Ñ Nb-Si, Ð¼Ð¾ÑÑÐ¾Ð»Ð¾Ð³Ð¸Ñ ÑÐ°ÑÑÐ¸Ñ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÑÐµÑ ÑÐ¾Ð±Ð¾Ð¹ Ð¿ÑÐ°ÐºÑÐ¸ÑÐµÑÐºÐ¸ Ð¸Ð´ÐµÐ°Ð»ÑÐ½ÑÐµ ÑÑÐµÑÑ, Ð¼Ð¸ÐºÑÐ¾ÑÑÑÑÐºÑÑÑÐ° ÑÐ¾ÑÑÐ¾Ð¸Ñ Ð¸Ð· 3 ÐºÐ¾Ð½ÑÑÐ°ÑÑÐ½ÑÑ ÑÐ°Ð· â ÑÐ²ÑÑÐ´Ð¾Ð³Ð¾ ÑÐ°ÑÑÐ²Ð¾ÑÐ° Nb Ð¸ ÑÐ¸Ð»Ð¸ÑÐ¸Ð´Ð¾Ð² Nb3Si Ð¸ Nb5Si3, ÑÐ°Ð²Ð½Ð¾Ð¼ÐµÑÐ½Ð¾ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð½ÑÑ Ð² Ð¾Ð±ÑÐµÐ¼Ðµ ÑÐ°ÑÑÐ¸ÑÑ Ð¿Ð¾ÑÐ¾ÑÐºÐ°, ÑÐ°Ð·Ð¼ÐµÑ ÐºÐ¾ÑÐ¾ÑÑÑ Ð² Ð¾ÑÐ½Ð¾Ð²Ð½Ð¾Ð¼ Ð½Ðµ Ð¿ÑÐµÐ²ÑÑÐ°ÐµÑ 1 Ð¼ÐºÐ¼, Ð¾Ð´Ð½Ð°ÐºÐ¾ Ð² Ð¾ÑÐ´ÐµÐ»ÑÐ½ÑÑ ÐºÑÑÐ¿Ð½ÑÑ ÑÐ°ÑÑÐ¸ÑÐ°Ñ Ð² Ð¿ÑÐ¾ÑÐµÑÑÐµ ÐºÑÐ¸ÑÑÐ°Ð»Ð»Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð¾Ð½Ð¸ ÑÐ²ÐµÐ»Ð¸ÑÐ¸Ð²Ð°ÑÑÑÑ Ð´Ð¾ 5 Ð¼ÐºÐ¼ Ð±Ð»Ð¸Ð¶Ðµ Ð¾Ñ ÑÐµÐ½ÑÑÐ¾Ð² ÐºÑÐ¸ÑÑÐ°Ð»Ð»Ð¸Ð·Ð°ÑÐ¸Ð¸.
Ð ÑÐ°Ð¼ÐºÐ°Ñ Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð¸Ñ ÑÐ°Ð±Ð¾Ñ Ð²Ð¿ÐµÑÐ²ÑÐµ Ð² Ð¼Ð¸ÑÐµ Ð¿Ð¾Ð»ÑÑÐµÐ½ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ¸Ð¾Ð½Ð½ÑÐ¹ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð» ÑÐ¸ÑÑÐµÐ¼Ñ Nb-Si Ð°Ð´Ð´Ð¸ÑÐ¸Ð²Ð½Ð¾Ð¹ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸ÐµÐ¹ ÑÑÑÑÐ¹Ð½Ð¾Ð³Ð¾ Ð½Ð°Ð½ÐµÑÐµÐ½Ð¸Ñ ÑÐ²ÑÐ·ÑÑÑÐµÐ³Ð¾ Ð½Ð° Ð¿Ð¾ÑÐ¾ÑÐºÐ¾Ð²ÑÑ Ð¼Ð°ÑÑÐ¸ÑÑ Ð½Ð¸Ð¾Ð±Ð¸Ñ Ñ Ð¿Ð¾ÑÐ»ÐµÐ´ÑÑÑÐµÐ¹ Ð¸Ð½ÑÐ¸Ð»ÑÑÑÐ°ÑÐ¸ÐµÐ¹ Ð»ÐµÐ³ÐºÐ¾Ð¿Ð»Ð°Ð²ÐºÐ¾Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½ÑÐ¾Ð¹ (ÐºÑÐµÐ¼Ð½Ð¸ÐµÐ¼).
ÐÐ¿ÐµÑÐ²ÑÐµ Ð² Ð¼Ð¸ÑÐµ Ð¿Ð¾Ð»ÑÑÐµÐ½ Ð¿Ð¾ÑÐ¾ÑÐ¾Ðº ÐµÑÑÐµÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ° ÑÐ¾ÑÑÐ°Ð²Ð° Nb-25Ti-2Cr-2Al-16Si (Ð°Ñ.%) Ð¼ÐµÑÐ¾Ð´Ð¾Ð¼ Ð¼ÐµÑÐ°Ð½Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð»ÐµÐ³Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ñ Ð¿Ð¾ÑÐ»ÐµÐ´ÑÑÑÐµÐ¹ Ð¿Ð»Ð°Ð·Ð¼ÐµÐ½Ð½Ð¾Ð¹ ÑÑÐµÑÐ¾Ð¸Ð´Ð¸Ð·Ð°ÑÐ¸ÐµÐ¹, Ð¿ÑÐ¸Ð³Ð¾Ð´Ð½ÑÐ¹ Ð´Ð»Ñ Ð°Ð´Ð´Ð¸ÑÐ¸Ð²Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´ÑÑÐ²Ð°.
description: Modern heat-resistant nickel-based alloys have operating temperatures of 1100â1150 Â° C, which is 0.8â0.85 of the melting point. A substitute for nickel alloys may be in-situ composites based on the Nb-Si system. The object of the study is a in-situ composite of the Nb-Si system, which is considered as a candidate for replacement with heat-resistant nickel-based superalloys. As part of the present work, experimental studies of the synthesis of the in-situ composite based on the Nb-Si system of binder jetting additive manufacturing technology were carried out.
As a result of the work, samples of the Nb-Si composite were obtained by applying an organic binder to a powder matrix of a spheroidized Nb powder, followed by burning the binder from the green model, with subsequent infiltration of the molten silicon. The microstructure of the obtained samples consists of NbSi2 silicide distributed in the Si matrix.
During the infiltration process, the entire niobium green model reacted with molten silicon by the reaction Nb + Si â NbSi2
As a result of the experiment, it was found that the key parameter for the synthesis of a composite material based on Nb-Si is the amount of Si supplied to the powder matrix.
A composite sample of the composition Nb-16Si (at.%) was obtained by binder jetting followed by sintering on a mechanical mixture of powders. As a result, a composite material was obtained whose microstructure is expressed by the phases Nb3Si, NbSi2 and Si.
In addition to studies of the process of binder jetting, a study was conducted on the synthesis of powder materials based on a in-situ composite of the Nb-Si system by mechanical alloying with subsequent plasma spheroidization.
During mechanical alloying, a layered heterogeneous microstructure is first formed with pronounced enriched zones of the starting elements, but with an increase in the process time, the microstructure is homogenized and powders are formed with a uniform distribution of chemical elements in the volume of the powder particles. However, with an increase in the time of mechanical alloying, from a certain moment, it was found to be 300 minutes, in the powders the Fe content sharply increased, corresponding to technological contamination by grinding media.
In the process of mechanical alloying, Nb experiences high plastic deformations, which lead to distortion of the crystal lattice, an increase in dislocations, resulting in an increase in the number of subgrains and the area of the boundaries of subgrains. With an increase in the number of subgrains to a certain value, subgrains are transformed into grains. This transformation mechanism leads to grain refinement, crystal lattice deformation, broadening and decrease in the intensity of Nb diffraction peaks. At the same time, Ti, Cr, Al, and Si atoms transfer to the deformed Nb lattice and form a solid solution, increasing the Nb lattice parameter, which leads to a shift of the diffraction peaks towards small angles.
After plasma spheroidization of powders of the Nb-Si system, the particle morphology is almost perfect spheres, the microstructure consists of 3 contrast phases - a solid solution of Nb and silicides Nb3Si and Nb5Si3, uniformly distributed in the volume of the powder particle, the size of which basically does not exceed 1 Î¼m, however in individual large particles during crystallization, they increase to 5 Î¼m closer to the centers of crystallization.
As part of the work, for the first time in the world, a composite material of the Nb-Si system was obtained by the binder jetting additive manufacturing technology on a niobium powder matrix, followed by infiltration with a low-melting component (silicon).
For the first time in the world, a powder of in-situ composite Nb-25Ti-2Cr-2Al-16Si (at.%) was obtained by mechanical alloying followed by plasma spheroidization, suitable for additive manufacturing.