Patent ID: 11939647
Assignee: JX METALS CORPORATION
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 0:
1. A tungsten sputtering target, wherein an area ratio of crystal grains having {100} planes oriented to a sputtering surface is in a range of 7.2 to 13.2%, an area ratio of crystal grains having {110} planes oriented to the sputtering surface is in a range of 20.4 to 23.4%, an area ratio of crystal grains having {111} planes oriented to the sputtering surface is in a range of 10.6 to 16.6%, and an area ratio in total of crystal grains having orientation planes oriented to the sputtering surface other than {100}, {11} and {111} planes is 46.8 to 62.1%, the area ratio being obtained by an analysis of a cross section perpendicular to the sputtering surface with an inverse pole figure mapping using electron backscatter diffraction.