本文選題：粘土　切入點(diǎn)：傳壓介質(zhì)　出處：《人工晶體學(xué)報(bào)》2017年08期 　論文類型：期刊論文

【摘要】：河南某地粘土礦物具有優(yōu)異的傳壓和密封性能,是傳統(tǒng)金剛石合成用傳壓介質(zhì)輔料葉蠟石的替代品。將該粘土礦物按照粗(-1.4 mm+0.5 mm)、中(-0.5 mm+0.25 mm)、細(xì)(-0.25 mm)三個(gè)粒級(jí)進(jìn)行配比,重量比為4∶4∶2,并添加5%水玻璃作為粘結(jié)劑,混合均勻,作為密封材料。白云石按照粗(-0.18 mm+0.15 mm)、細(xì)(-0.15 mm)兩個(gè)粒級(jí)進(jìn)行配比,重量比為8∶2,添加8%水玻璃,混合均勻,作為傳壓材料。經(jīng)粉壓成型和焙燒熱處理,制成傳壓層在內(nèi)部,密封層在外部,外形尺寸為65 mm×65 mm×32.5 mm,內(nèi)徑為38.5 mm的分體型復(fù)合傳壓介質(zhì)。經(jīng)金剛石合成工業(yè)試驗(yàn)得出,金剛石產(chǎn)品單產(chǎn)量為116.0 ct,≥130 N顆粒含量為28.0%,≥40/60目顆粒含量為77.5%,單位錘耗為0.28 g。該新型傳壓介質(zhì)的使用性能跟常規(guī)葉蠟石傳壓介質(zhì)相當(dāng),合成出的金剛石產(chǎn)品兩者之間沒有明顯差異。
[Abstract]:The clay mineral in a certain area of Henan Province has excellent pressure transfer and sealing performance, and is a substitute for pyrophyllite, an auxiliary material for the traditional pressure transfer medium for diamond synthesis. The clay mineral is proportioned according to three grained grades: coarse -1.4 mm 0.5 mm ~ (-1) mm ~ (-1) mm ~ (-1) mm ~ (0.5) mm ~ (25) mm ~ (-1) -0. 25 mm ~ (-) ~ (-). The weight ratio is 4: 4: 2, and 5% sodium silicate is added as binder, mixed evenly and used as sealing material. Dolomite is proportioned according to the size of coarse -0.18mm 0.15mm, fine-grained stone. The weight ratio is 8: 2, and 8% sodium silicate is added, and the mixture is even. As a pressure transfer material, the pressure transfer layer is made by powder pressing forming and calcination heat treatment, the pressure transfer layer is inside, the sealing layer is outside, the shape dimension is 65 mm 脳 65 mm 脳 32.5 mm, and the inner diameter is 38.5 mm. The single output of diamond products is 116.0 ct, the content of grain 鈮，

本文編號(hào)：1630504