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  本文關(guān)鍵詞： 氧化鋯 磨損 微波燒結(jié) 常規(guī)燒結(jié)　出處：《華西口腔醫(yī)學(xué)雜志》2017年02期 　論文類型：期刊論文

【摘要】：目的采用微波燒結(jié)與常規(guī)燒結(jié)牙科用氧化鋯與滑石瓷進行摩擦磨損實驗,探討其摩擦磨損性能及對磨物的磨耗程度。方法選取Lava品牌氧化鋯試件10個,隨機分為微波燒結(jié)組和常規(guī)燒結(jié)組。使用粗糙度輪廓儀測量氧化鋯表面粗糙度;以滑石瓷球為對磨物進行磨損實驗,記錄摩擦系數(shù)曲線,計算磨損體積;采用光學(xué)顯微鏡觀察氧化鋯和滑石瓷球的磨損形貌,場發(fā)射掃描電子顯微鏡(SEM)觀察氧化鋯顯微結(jié)構(gòu)。結(jié)果微波燒結(jié)和常規(guī)燒結(jié)氧化鋯磨損量依次為(6.940±1.382)×10~(-2)、(7.952±1.815)×10~(-2) mm~3,對磨滑石瓷磨損體積依次為(14.189±4.745)×10~(-2)、(15.813±3.481)×10~(-2) mm~3,兩種燒結(jié)方式氧化鋯耐磨性及造成對磨物磨損量差異均無統(tǒng)計學(xué)意義。光學(xué)電鏡顯示氧化鋯可見明顯的犁溝;對磨滑石瓷可見裂紋,同時伴有犁溝。SEM顯示兩種燒結(jié)方式氧化鋯均已致密燒結(jié),微波燒結(jié)氧化鋯晶粒更加細小均勻。結(jié)論兩種燒結(jié)方式氧化鋯摩擦磨損性能接近。
[Abstract]:Objective to study the friction and wear properties of zirconia and talc porcelain by microwave sintering and conventional sintering. The surface roughness of zirconia was measured by roughness profiler, the wear test was carried out with talc ceramic ball, the friction coefficient curve was recorded and the wear volume was calculated. The wear morphology of zirconia and talc ceramic balls was observed by optical microscope. Results the wear rate of zirconia by microwave sintering and conventional sintering was 6.940 鹵1.382) 脳 10 ~ (1. 815) 脳 10 ~ (10) ~ (-2) mm ~ (-3) mm ~ (-3) respectively, and the wear volume of grinding talc porcelain was 14.189 鹵4.745 脳 10 ~ (10) ~ (-2) mm ~ (-2) mm ~ (-1) respectively. The wear resistance of two kinds of sintered zirconia was 15.813 鹵3.481 脳 10 ~ (-2) mm ~ (-2) mm ~ (-1). The results showed that there was no significant difference in wear quantity of grinding materials. The obvious ploughing groove of zirconia could be seen by optical electron microscope. The visible cracks of grinding talc porcelain were observed, accompanied by ploughing. SEM showed that the zirconia and zirconia grains were densified and sintered by microwave sintering. Conclusion the friction and wear properties of zirconia in the two sintered methods are similar.
【作者單位】： 南昌大學(xué)撫州醫(yī)學(xué)院;南昌大學(xué)附屬口腔醫(yī)院修復(fù)一科;九江學(xué)院附屬口腔醫(yī)院修復(fù)科;
【分類號】：R783.1

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