CAJ | 학술논문

本文在5.5～5.7 GPa,1450～1550℃的条件下由镍锰钴-石墨-硫体系中合成金刚石单晶.合成的金刚石晶体具有完整的{111}和{100}面,内部有少量包裹体.晶体表面有凹坑,凹坑内有许多细小的孔洞,且有连晶出现.X射线荧光光谱检测结果表明,随着反应体系中硫含量的增加,晶体中硫和锰的含量明显增加,而镍和钴的含量却降低.这由于硫与触媒中的锰发生了反应,改变了合成触媒的成分配比,进而改变了触媒的性质.
본문재5.5～5.7 GPa,1450～1550℃적조건하유얼맹고-석묵-류체계중합성금강석단정.합성적금강석정체구유완정적{111}화{100}면,내부유소량포과체.정체표면유요갱,요갱내유허다세소적공동,차유련정출현.X사선형광광보검측결과표명,수착반응체계중류함량적증가,정체중류화맹적함량명현증가,이얼화고적함량각강저.저유우류여촉매중적맹발생료반응,개변료합성촉매적성분배비,진이개변료촉매적성질.
Diamond single crystals were synthesized in Ni70 Mn25 Co5-graphite-sulfur powder system under the conditions of 5.5-5.7 Gpa and 1450-1550 ℃.They were composed of equally developed {111} and {100} faces, with a little inclusions in them.And there were usually several depressions on the crystal, in which there were usually a lot of small pits, and a smaller adjunct crystal connecting with the main crystal.It was shown by the wavelength dispersive X-ray fluorescence spectrum that with the increase of the sulfur content, the contents of manganese and sulfur in the crystal obviously increased, while that of nickel and cobalt tended to decrease.This was attributed to the interaction between manganese and sulfur which had changed the catalystal characteristcs of the NiMnCo alloy by changing its composition stoichiometry.