Joias em Titânio
Autor: Denise Queiroz | Publicado: 2013-05-18T20:23:00-03:00

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O titânio,
um metal bastante leve e resistente, tem sido empregado na joalheria devido ao
grande espectro de cores que possibilita.



A coloração
pode ser obtida por aquecimento ou por processo eletroquímico.



Sua cor
original é cinza e conforme é aquecido, vão surgindo cores em sua superfície.










O surgimento
de cores na superfície do titânio ocorre devido à formação de uma certa
espessura de óxidos sobre o mesmo. Na verdade, as cores não estão presentes nos
óxidos, elas resultam do fenômeno “interferência ótica”.





&nbsp;



Esse mesmo
efeito ótico pode ser observado numa bolha de sabão, em manchas de óleo sobre a
água, conchas de madrepérola, asas de borboleta, etc.









O que
encanta nas joias em titânio, é que cada peça é única e a distribuição das
cores é quase sempre uma surpresa! É claro que é possível controlar o calor e
assim provocar a cor desejada, mas uma fração de segundo a mais ou um breve
movimento pode mudar tudo! E se esquentar demais, as cores se perdem e o
trabalho tem de voltar à estaca zero após lixar bem a camada de oxidação.







&nbsp;Acima, estão algumas joias em titânio de minha autoria, Denise Queiroz, como brincos, pingentes e marcador de livro. 





Para mim é
sempre uma experiência agradável “brincar” de colorir o titânio com a chama do
maçarico…surpresas podem acontecer durante o processo!



&nbsp;





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