1) carbothermal reduction and nitridation
碳热还原氮化法
1.
One way is the hot-pressing process using chemical starting materials, and another is Carbothermal Reduction and Nitridation process using natural starting materials.
目前,制取Sialon耐火材料的途径通常有两种:(一)利用化学原料氮化法合成;(二)利用天然原料碳热还原氮化法合成。
2) carbothermal reduction nitridation
碳热还原氮化法
1.
The(Ca,Mg) α′-Sialon/BN composite powder was synthesized by carbothermal reduction nitridation with boron-rich slag as main starting material,of which the composition is(Ca,Mg)xSi12-3xAl3xOxN16-x where x is ranging from 0.
以富硼渣为主要原料,采用碳热还原氮化法合成了组分为(Ca,Mg)xSi12-3xAl3xOxN16-x(x=0。
3) carbothermal reduction-nitridation
碳热还原氮化
1.
Preparation of nanocrystalline Ti(C,N) solid solution powders via carbothermal reduction-nitridation reaction of nano TiO_2 in close nitrogen atmosphere was investigated.
在封闭系统中,对纳米TiO2碳热还原氮化反应合成纳米晶Ti(C,N)固溶体粉末进行研究。
2.
With titanium-bearing blast furnace slag, silica fume, bauxite chalmette and carbon black as raw materials, (Ca, Mg)α′-Sialon-AlN-TiN powders were synthesized by carbothermal reduction-nitridation (CRN).
以含钛高炉渣、硅灰、高铝矾土熟料和炭黑为原料,采用碳热还原氮化法合成了(Ca,Mg)α′2Sialon2AlN2TiN粉。
3.
Factors influencing synthesis of β-Sialon by carbothermal reduction-nitridation are reviewed.
综述了采用碳热还原氮化法制备β-Sialon的影响因素。
4) CRN
碳热还原氮化
1.
Carbothermal Reduction and Nitridation(CRN) process is one of the effective methods with the potential for large-scaled industrial application, using for the preparation of low cost & high performance SiAlON ceramic materials.
碳热还原氮化工艺是近年来制备低成本高性能SiAlON陶瓷材料的一种实用方法,具有产业化生产潜力。
2.
TiN/β′-Sialon electroconductive ceramic powder was synthesized by CRN(carbothermal reduction-nitridation) with high-titania slag,bauxite chalmette,silicon fume and carbon black as starting materials.
以高钛渣、高铝矾土熟料、硅灰和炭黑为原料,采用碳热还原氮化法合成TiN/β′-Sialon导电陶瓷粉体。
3.
Carbothermal Reduction and Nitridation (CRN) process is one of the effective methods with the potential for large-scale industrial application, particularly for the preparation of low cost & high performance SiAlON refractories which can be used in future purifying metallurgy.
碳热还原氮化工艺具有低成本且有产业化生产的潜力等特点,因而被认为是制备洁净冶炼用SiAlON耐火材料的实用方法。
5) carbothermal reduction and nitridation
碳热还原氮化
1.
Based on thermodynamic analysis,Si3N4 powders were synthesized by carbothermal reduction and nitridation from iron ore tailings and carbon black as raw materials.
在热力学分析的基础上,以铁尾矿和碳黑为原料,采用碳热还原氮化法合成了Si3N4粉。
2.
Sialon powders were prepared by carbothermal reduction and nitridation method at 1450 ℃ and 1500 ℃ using high-alumina fly ash and carbon coke as raw materials.
以焦炭粉作为还原剂,在温度为1450℃,保温3 h时,配碳量为理论值的200%,碳热还原氮化高Al2O3粉煤灰可以获得的Fe-Sialon材料。
6) carbothermal reduction nitridation
碳热还原氮化
1.
With abundant solid waste of metallic tailings and recycling resources of Yellow River sand as raw materials,carbon black as reduction agent,Ca-α-sialon/SiC powders were synthesized by carbothermal reduction nitridation(CRN).
以大量的固体废弃物金属尾矿和天然的可再生资源黄河泥沙为主要原料,利用炭黑作还原剂,采用碳热还原氮化法合成了Ca-α-Sialon/SiC复相陶瓷粉。
2.
2V)(CN)-20Ni composite powders were prepared by oxides via tumbling ball milling and high-energy ball milling and subsequent carbothermal reduction nitridation.
利用X衍射仪研究了滚筒球磨和高能球磨后的混合料经碳热还原氮化制备(Ti,15W,5Mo,0。
补充资料：碳热还原法
在高温下用碳还原金属氧化物制取金属的方法。例如，在高温下用碳还原氧化亚铁可得金属铁：
FeO+C─→Fe+CO其热力学依据是：金属氧化物的生成自由能变化ΔG(MO)是随温度的升高而逐渐增高（负值变小），而一氧化碳的生成自由能变化ΔG(CO)却是随温度的升高而明显降低（负值变大）,所以当温度升高到ΔG(CO)-ΔG(MO)＜0时，原来在低温下不能进行的反应变得能够进行。这种方法的优点是焦炭价廉易得，缺点是必须使用鼓风炉或电熔炉，而且许多金属会生成碳化物。
FeO+C─→Fe+CO其热力学依据是：金属氧化物的生成自由能变化ΔG(MO)是随温度的升高而逐渐增高（负值变小），而一氧化碳的生成自由能变化ΔG(CO)却是随温度的升高而明显降低（负值变大）,所以当温度升高到ΔG(CO)-ΔG(MO)＜0时，原来在低温下不能进行的反应变得能够进行。这种方法的优点是焦炭价廉易得，缺点是必须使用鼓风炉或电熔炉，而且许多金属会生成碳化物。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条