(中南工業(yè)大學粉末冶金國家重點實驗室，長沙410083)
摘 要: 介紹了熱壓陶瓷高速噴砂咀的研制，著重研究了在熱壓溫度為1 450～1 550 ℃，熱壓壓力為10～40 MPa 情況下材料的致密比，以及密度由4.30 g/cm3 增加到4.60 g/cm3 時材料的硬度和強度的變化情況。結(jié)果發(fā)現(xiàn)，隨著溫度的升高和壓力的增大，材料的密度有規(guī)律地增加；隨著密度的增加，材料的硬度和強度增加。研制的陶瓷噴砂咀產(chǎn)品的性能如下：密度4.50～4.60 g/cm3，硬度 HRA92～94，抗彎強度700～900 MPa，使用壽命1 000 h以上。
關(guān)鍵字: 陶瓷；熱壓；噴砂咀
（State Key Laboratory for Powder Metallurgy,
Central South University of Technology, Changsha 410083, P.R.China）
Abstract: To deal with the high-speed ceramic spray nozzle made by thermo pressing process, the densification of the nozzle material under the condition of 1 450～1 550 ℃ and 10～40 MPa pressure, and the hardness and strength of the material with 4.30～4.60 g/cm3 density were investigated. The results show that the density of the material increases with the increase in thermo pressing temperature and pressure, and the hardness and strength of the material increase with the increase in the density. The characteristics of the nozzle are as follows: density 4.50～4. 60 g/m3, hardness HRA92-94, bending strength 700～900 MPa, and lifetime ≥1 000 h.
Key words: ceramics; thermo pressing; spraying; nozzles
