CAJ | 학술논문

采用 C 类(Ni82 Cr7 Si4.5 B3.1 Fe3)和 E 类(BNi76 Cr15 P9)两种钎料对金刚石进行真空炉中钎焊。通过静压强度测试对各种状态下的金刚石钎焊性能进行评价，并借助 SEM 以及拉曼光谱仪对金刚石表面碳化物的形貌和金刚石的石墨化进行检测分析。结果表明：钎焊高温对金刚石强度的影响较合金钎料的化学侵蚀作用而言小很多；触媒元素 Ni、Fe 和强碳化物形成元素 Cr 等引起的化学侵蚀，是导致金刚石静压强度降低的两个主要原因；不同品质的金刚石经过高温钎焊后，静压强度值出现不同程度的降低。
채용 C 류(Ni82 Cr7 Si4.5 B3.1 Fe3)화 E 류(BNi76 Cr15 P9)량충천료대금강석진행진공로중천한。통과정압강도측시대각충상태하적금강석천한성능진행평개，병차조 SEM 이급랍만광보의대금강석표면탄화물적형모화금강석적석묵화진행검측분석。결과표명：천한고온대금강석강도적영향교합금천료적화학침식작용이언소흔다；촉매원소 Ni、Fe 화강탄화물형성원소 Cr 등인기적화학침식，시도치금강석정압강도강저적량개주요원인；불동품질적금강석경과고온천한후，정압강도치출현불동정도적강저。
Brazed diamond samples with C type(Ni82 Cr7 Si4.5 B3 .1 Fe3)and E type(BNi7 6 Cr1 5 P9) brazing alloys were prepared by vacuum furnace heating.The brazability of diamonds under different conditions was evaluated by static compressive strength testing.Microstructure of the carbide on diamond surface and graphitization of the diamond were analyzed by scanning electron microscope (SEM) and laser Raman spectroscopy.Results showed that high brazing temperature had much smaller influence on diamond than chemical attack of brazing alloys did.Catalytic elements,Ni and Fe,and strong carbide forming element Cr,which led to a great degradation of diamond property,were the main reason why its static compressive strength decreased.We also found that the static compressive strength of brazed diamonds of different quality decreased in different degrees.