1) Precursor
[英][pri:'kɜ:sə(r)] [美][prɪ'kɝsɚ]
先驱体
1.
Preparation of boron nitride fiber by precursor method;
先驱体法制备氮化硼纤维的研究
2.
Research on pyrolyzing processes of silicon carbide(SiC) precursors in chemical vapor deposition(CVD).;
CVD SiC先驱体热分解过程的研究
3.
Synthesis and Characterization of a Novel Precursor for BCN Compound;
一种新BCN化合物先驱体的合成及其表征
2) preceramic
先驱体
1.
The joining of C_f/SiC composites via preceramic silicone resin(SR)at high temperature(1200℃)was studied.
对先驱体硅树脂高温(1200℃)转化陶瓷接头连接C_f/SiC复合材料进行了研究。
2.
The joining of graphite,ceramic SiC and C_f/SiC composites via preceramic silicone resin(SR) at high temperature(800~1400℃) is studied.
对先驱体硅树脂高温(800~1400℃)转化陶瓷接头连接石墨、S iC陶瓷及Cf/S iC复合材料进行了研究,着重对硅树脂固化裂解过程、硅树脂溶液浓度、裂解温度及惰性填料对连接性能的影响进行了探讨。
3.
The joining of graphite, ceramic SiC and C_f/SiC composites via preceramic silicone resin (SR) at high temperature (800~1400℃) was studied.
对先驱体硅树脂高温(800～1400℃)转化陶瓷接头连接石墨、陶瓷SiC及Cf/SiC复合材料进行了研究,着重对硅树脂固化裂解过程、硅树脂溶液浓度及裂解温度对连接性能的影响进行了探讨。
3) columbite precursor method
先驱体法
1.
04)ceramics have been prepared by a columbite precursor method.
采用铌铁矿先驱体法制备了 Pb_(1-x)Ba_x(Zr_(0505)Ti_(0495))_(095)(Mn_(1/3)Nb_(1/3)Sb_(1/3))_(0。
2.
05O3 (PMNS-PZT) ceramics were prepared by a columbite precursor method.
采用铌铁矿先驱体法制备了Pb1–xSrx(Zr0。
4) precursor method
先驱体法
1.
The perovskite phase of (1 x)PMN xPT(0≤x≤1)has been synthesized by precursor method As it showed by the XRD,the excess of PbO and MgO is helpful to forming perovskite (1 x)PMN xPT Pure perovskite (1 x)PMN xPT can be synthesized at very low temperature,and therefore volatilization of PbO can be reduce
采用先驱体法合成钙钛矿相0。
2.
For this PMMSN material composition which located near the morphotropic phase boundary,material was prepared by conventional method and different precursor method.
以材料的准同型相界附近的组成为研究对象,采用普通合成法、不同合成路径的先驱体法进行材料合成,通过添加低温烧结促进剂实现低温烧结,并研究其对材料性能的影响。
3.
Pb1-xSrx(Mn1/3Sb2/3)aZrbTicO3 piezoelectric ceramics were prepared by precursor method.
采用先驱体法制备了Pb1-xSrx(Mn1/3Sb2/3)aZrbTicO3压电陶瓷。
5) oxygen in precursor
先驱体氧
6) Preceramic polymer
陶瓷先驱体
1.
Joining of reaction-bonded silicon carbide (RBSiC) to itself has been realized using a preceramic polymer, polysiloxane, as joining material.
采用陶瓷先驱体有机聚合物聚硅氧烷连接反应烧结碳化硅(RBSiC)陶瓷。
2.
Perhydropolysilazane(PHPS) and polyhydridomethylsilazane(PHMS) were used as preceramic polymers,respectively,to prepare three-dimensional silica fiber reinforced silicon nitride composites through repeated infiltration and pyrolysis at a low temperature(600℃),and the mechanical properties and microstructures of the composites were investigated through comparison.
以全氢聚硅氮烷(PHPS)和聚甲基硅氮烷(PHMS)为陶瓷先驱体,通过循环浸渍和600℃低温裂解分别制备了三维石英纤维增强氮化硅复合材料,对比研究了复合材料的力学性能和微观结构。
3.
A novel soluble preceramic polymer to SiBNC ceramic, polyborosilazane (PBSZ), was synthe-sized via a cocondensation approach with a yield of about 91% (w%) by using dichloromethylsilane (MeHSiCl2), boron trichloride (BCl3) and hexamethydisilazane (HMDZ) as the starting materials.
以甲基氢二氯硅烷、三氯化硼、六甲基二硅氮烷为起始原料,采用共缩合的方法合成了一种新型的可溶可熔的SiBNC陶瓷先驱体——聚硼硅氮烷(PBSZ)。
补充资料：先驱体法碳化硅纤维增强铝基复合材料
分子式：
CAS号：
性质：一种连续纤维增强金属基复合材料。有不含钛(商品名称Nicalon)和含钛(商品名称Tyranno)两种纺丝碳化硅纤维，与铝复合后一般含纤维40％(体积)左右，单向增强时纵向拉伸强度约为700～1000MPa，模量95～120GPa，密度约2.6g/cm3。主要的制造方法为各种液态渗透工艺。为了促进与铝的浸润，常用的制造方法是在超声波的作用下用连续铸造法先制成复合丝，然后再将复合丝热压成各种制品。也可以直接用压力铸造工艺制成各种零件。由于纺丝碳化硅纤维直径细，柔曲性好，此便于制造形状比较复杂的零件。
CAS号：
性质：一种连续纤维增强金属基复合材料。有不含钛(商品名称Nicalon)和含钛(商品名称Tyranno)两种纺丝碳化硅纤维，与铝复合后一般含纤维40％(体积)左右，单向增强时纵向拉伸强度约为700～1000MPa，模量95～120GPa，密度约2.6g/cm3。主要的制造方法为各种液态渗透工艺。为了促进与铝的浸润，常用的制造方法是在超声波的作用下用连续铸造法先制成复合丝，然后再将复合丝热压成各种制品。也可以直接用压力铸造工艺制成各种零件。由于纺丝碳化硅纤维直径细，柔曲性好，此便于制造形状比较复杂的零件。
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参考词条