贵金属
貴金屬
귀금속
PRECIOUS METALS
2015年
2期
33-37,43
,共6页
金属材料%片状银粉%球磨%热处理%晶体缺陷
金屬材料%片狀銀粉%毬磨%熱處理%晶體缺陷
금속재료%편상은분%구마%열처리%정체결함
metal materials%silver flakes%ball milling%annealing%crystal defects
通过高能球磨制备的片状银粉将产生大量的晶体缺陷，这些缺陷的存在将影响银粉的导电性能。对高能球磨制得的片状银粉进行了热处理悁究，以减少或消除片状银粉内部的晶体缺陷，改善其微观组织，提高银粉的导电性。结果表明，热处理使塑性形变后的银粉发生回复和再结晶，晶格畸变和晶体缺陷明显减少或者部分去除。
通過高能毬磨製備的片狀銀粉將產生大量的晶體缺陷，這些缺陷的存在將影響銀粉的導電性能。對高能毬磨製得的片狀銀粉進行瞭熱處理悁究，以減少或消除片狀銀粉內部的晶體缺陷，改善其微觀組織，提高銀粉的導電性。結果錶明，熱處理使塑性形變後的銀粉髮生迴複和再結晶，晶格畸變和晶體缺陷明顯減少或者部分去除。
통과고능구마제비적편상은분장산생대량적정체결함，저사결함적존재장영향은분적도전성능。대고능구마제득적편상은분진행료열처리연구，이감소혹소제편상은분내부적정체결함，개선기미관조직，제고은분적도전성。결과표명，열처리사소성형변후적은분발생회복화재결정，정격기변화정체결함명현감소혹자부분거제。
Silver flakes made by ball milling contain large quantities of crystal defects that have negative influences on the electric conductivity of silver powders. To decrease crystal defects, ameliorate the microstructure and improve the electric conductivity, an appropriate heat treatment was established in our work. The results indicated that annealing could make milled silver flakes recover and re-crystallize, resulting in the decrease and even elimination of these lattice distortion and crystal defects.
