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碳化硼磨料在藍寶石研磨上有何優(yōu)勢

關(guān)鍵詞 磨料 , 藍寶石|2024-02-01 16:07:28|來源 嵩山硼業(yè)SSPY
摘要 ?藍寶石研磨加工的主要目的是去除藍寶石切片過程產(chǎn)生的表面切痕、凹凸不平等損傷層,提高晶片平整度,并降低表面粗糙度,達到預(yù)拋光要求。在工業(yè)加工中,藍寶石表面從原料粗糙面到鏡面光...

藍寶石研磨加工的主要目的是去除藍寶石切片過程產(chǎn)生的表面切痕、凹凸不平等損傷層, 提高晶片平整度, 并降低表面粗糙度, 達到預(yù)拋光要求。在工業(yè)加工中,藍寶石表面從原料粗糙面到鏡面光滑,需要經(jīng)歷三道加工工藝:粗磨、精磨和拋光。在每一道加工工藝后,藍寶石晶片的總厚度偏差和表面粗糙度會逐漸減小。

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       藍寶石的硬度大,一般的磨料對藍寶石沒有切削力。從材料和研磨學(xué)界的角度看,加工和研磨藍寶石晶體較好的材料是人造金剛石碳化硼,二氧化硅。由于人造金剛石硬度過大(莫氏硬度10)在研磨藍寶石晶片時會對表面產(chǎn)生劃傷,影響晶片的透光度,并且價格昂貴;而二氧化硅硬度不夠(莫氏硬度7),磨削力差在研磨工程中費時、費工。因此,碳化硼磨料(莫氏硬度9.3)成為加工和研磨藍寶石晶體理想的材料。

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       碳化硼在很久以前已經(jīng)作為一種粗砂研磨材料,它本身熔點高,通過高溫熔煉粉末,它可以加工成簡單的形狀,用于硬質(zhì)合金、寶石等硬質(zhì)材料的磨削、研磨、鉆孔及拋光等。

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       碳化硼磨料在減小藍寶石亞表面損傷深度方面較金剛石磨料有明顯優(yōu)勢。碳化硼除了在藍寶石粗磨中優(yōu)勢明顯,其與其他研磨粒子的復(fù)合粒子在提升提高藍寶石化學(xué)機械拋光表面質(zhì)量和加工效率也非常值得探索應(yīng)用。

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