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cermet

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cermet n.＝ceramal.

n. ＝ceramal. “antifriction cermet“ 中文翻譯：   減摩金屬陶瓷“boride cermet“ 中文翻譯：   硼[金屬]陶瓷。 “carbide cermet“ 中文翻譯：   碳化物金屬陶瓷“ceramal =cermet“ 中文翻譯：   金屬陶瓷“cermet (ceramic)“ 中文翻譯：   瓷金“cermet approach“ 中文翻譯：   金屬陶瓷工藝“cermet bit“ 中文翻譯：   金屬陶瓷車刀“cermet coating“ 中文翻譯：   金屬陶瓷層; 金屬陶瓷敷層; 金屬陶瓷涂層“cermet component“ 中文翻譯：   金屬陶瓷元件“cermet compound“ 中文翻譯：   金屬陶瓷化合物“cermet conductor“ 中文翻譯：   金屬陶瓷導體“cermet contactor“ 中文翻譯：   金屬陶瓷接觸器“cermet fuel“ 中文翻譯：   金屬陶瓷燃料“cermet hill“ 中文翻譯：   山丘“cermet material“ 中文翻譯：   金屬陶瓷材料“cermet microcircuit“ 中文翻譯：   金屬陶瓷微型電路“cermet mixture“ 中文翻譯：   金屬陶瓷混合物“cermet mold“ 中文翻譯：   金屬陶瓷模“cermet mould“ 中文翻譯：   金屬陶瓷模“cermet of analysis“ 中文翻譯：   化驗證書“cermet of class“ 中文翻譯：   船級證書“cermet of classification“ 中文翻譯：   船級證書“cermet of competency“ 中文翻譯：   合格證書“cermet of conformity“ 中文翻譯：   合格證書“cermesoni“ 中文翻譯：   切爾梅索尼“cermentini“ 中文翻譯：   切爾門蒂尼

With thermal spray technology , the surface of water wall tubes is easily covered by varied high performance coatings . in this paper , several new alloy and cermet coatings applied to water wall tubes were designed and their performance was studied according to the research item of hanchuan power station of hubei province “ the study and development on the corrosion - resistant and wear - resistant coatings of water wall tubes in boiler “ 采用熱噴涂技術可以方便地在鍋爐管道表面獲得各種高性能的防腐耐磨涂層。本文結合湖北省漢川電廠的研究項目“鍋爐水冷壁管防腐耐磨涂層的開發研究”進行水冷壁管新型合金和金屬陶瓷復合涂層的設計和性能研究。

The sintering time also affects the specimens “ properties . nano - composite wc - co powder can be hot press sintered to cermet whose hra is 94 . 6 and trs is 1183 mpa under 1350 for 2 hours 最終燒結實驗表明納米復合wc - co粉末1350保溫2小時條件下的熱壓燒結可以獲得抗彎強度為1183mpa ，洛氏硬度為94 . 6的硬質合金。

With thermal spray technology , the surface of water wall tubes is easily covered by varied high performance coatings . in this paper , several new alloy and cermet coatings applied to water wall tubes were designed and their performance was studied according to the research item of hanchuan power station of hubei province “ the study and development on the corrosion - resistant and wear - resistant coatings of water wall tubes in boiler “ 采用熱噴涂技術可以方便地在鍋爐管道表面獲得各種高性能的防腐耐磨涂層。本文結合湖北省漢川電廠的研究項目“鍋爐水冷壁管防腐耐磨涂層的開發研究”進行水冷壁管新型合金和金屬陶瓷復合涂層的設計和性能研究。

The sintering time also affects the specimens “ properties . nano - composite wc - co powder can be hot press sintered to cermet whose hra is 94 . 6 and trs is 1183 mpa under 1350 for 2 hours 最終燒結實驗表明納米復合wc - co粉末1350保溫2小時條件下的熱壓燒結可以獲得抗彎強度為1183mpa ，洛氏硬度為94 . 6的硬質合金。

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With thermal spray technology , the surface of water wall tubes is easily covered by varied high performance coatings . in this paper , several new alloy and cermet coatings applied to water wall tubes were designed and their performance was studied according to the research item of hanchuan power station of hubei province “ the study and development on the corrosion - resistant and wear - resistant coatings of water wall tubes in boiler “ 采用熱噴涂技術可以方便地在鍋爐管道表面獲得各種高性能的防腐耐磨涂層。本文結合湖北省漢川電廠的研究項目“鍋爐水冷壁管防腐耐磨涂層的開發研究”進行水冷壁管新型合金和金屬陶瓷復合涂層的設計和性能研究。

As the position , intensity and width of the plasma resonance absorption peak are concerned , we find that maxwell - garnett and ping sheng theories are applicable for the cermet films with low metal volume fraction , while bruggeman theory fits better than maxwell - garnett theory for au - mgf2 films with high metal volume fraction 就金屬顆粒表面等離子共振引起的吸收峰的峰位、強度和峰形而言，對低金屬組分的納米金屬陶瓷薄膜光學常數的計算， maxwell - garnett和pingsheng要比bruggeman理論結果好。

The fractured surface morphology of the cermets were observed by a scanning electron microscope ( sem ) . results showed that the ysz - ni - cr and ysz - ni - v cermets had a better wettability than the ysz - ni cermet while the wettability of ysz - ni - mo cermet was worse . the grain sizes of the ysz - ni - based cermets sintered by hot - pressing technique were about 0 . 3 rn with a homogeneous microstructure and uniform distribution 用sem觀察了所制備的ysz - ni系列金屬陶瓷的斷面形貌，結果表明:金屬cr和v的引入對金屬相和ysz基體的潤濕起到了改善的作用，而引入金屬mo對ysz一ni的潤濕性沒有起到改善作用;熱壓燒結后ysz一ni系列金屬陶瓷的晶粒大小和分布十分均勻，晶界清晰，粒度在0 . 3卜m左右。

The results also indicate that by taking particle size effect into consideration , the theoretical values of optical constants of the cermet films are more consistent with experimental values . at last we discuss the discrepancy between the theoretical results and the experimental results , and the factors that cause the discrepancy are analyzed as well 但是我們又發現對納米金屬陶瓷薄膜材料的光學常數的計算，考慮尺寸效應和極化因子修正后的值與實驗結果之間仍存在一定的差異，文章最后我們分析討論了產生這些差異的原因。

The paper can be divided into three parts . in the first part , the international achievement of cermet thin film study is reviewed , which includes the technology of preparing the thin films , microstructure analysis , and influence of the size , shape and distribution of metal particles on the optical and electrical properties of cermet films 論文分三個部分，在緒論部分，我們綜述了上世紀七十年代到本世紀初國內外科研人員對金屬陶瓷復合膜制備及光電性質研究的報道，特別關注了復合薄膜中金屬顆粒的尺寸、形狀及空間分布對薄膜的電學、光學等性質影響的情況。

Due to their unique optical , electrical properties and potential applications based on quantum size effect , small size effect and interface effect , cermet films consisting of ceramic matrix and embedded metal nanoparticles are attracting increasing attention for both fundamental and practical reasons 作為一類新型的功能薄膜材料，由納米金屬微粒鑲嵌于陶瓷基體中所構成的金屬陶瓷薄膜，由于量子尺寸效應、小尺寸效應、界面效應而具有獨特的光電特性和良好的應用前景，正在引起材料學界的極大關注。

For xrd , ellipsometry examinations , single - side - polished si ( lll ) wafers were used as substrates and for resistance measurement , glass was used and for infrared examination , double - side - polished si ( lll ) wafers were used and for ultraviolet - visible spectrophotometry , double - side - polished quartz wafers were used and for tem micrograph and electron diffraction pattern observation , cu nets deposited by formvar film were used . the cu - mgf2 cermet films were from 50 to 600nm thick 用于xrd分析、橢偏測量的單拋si ( 111 )晶片和電阻測試的載玻片上淀積膜厚約為600nm ；用于ir測試的雙拋si ( 111 )晶片和uv測試的石英玻璃片上淀積膜厚約為250nm ；用于透射電鏡分析的樣品則淀積在400目銅網上的支撐formvar膜上，膜厚約為50 100nm 。

The vc - fe surface composite shows high wear - resistance , it ' s wear - resistance is 4 . 20 times as that of chilling respectively . with the content of v increasing , it ' s rigidity and wear - resistance increases continually . more vc grains gained , and well distributed , better wear - resistance the vc - fe surface composite will show . ( 7 ) surface cermet composite was formed by the means of cast - sintering technique , with the help of adding wc grains and the quantity of heat sent out from the reaction v + c vc , the carbide cermet quality percent exceeds 60 % 在重載干滑動摩擦條件下， vc一fe表面復合材料顯示了很高的耐磨性，其相對耐磨性是可淬硬鑄鐵的4 . 2倍:隨著含v量的增加， vc一fe表面復合材料的鑄態硬度和耐磨性不斷提高， vc顆粒越多，分布越均勻，表面復合材料的耐磨性就愈好。

What ' s more , optical constants of cu - mgf , cermet films were stlldied both theoretically and experimentally . a reasonable agreemeflt was approached between the revised mg theoretical and the experimental results . the electric research showed that the percolation thieshold ql should be between l5 % and 20 % 用變溫四引線技術測量薄膜的電阻-溫度曲線，分析表明：實驗制備的cu - mgf _ 2復合納米金屬陶瓷薄膜的滲透閾q _ m ~ c應處于15和20之間，樣品cll卜） mgf 。

In the thesis , we developed new alloy and cermet coating materials by adjusting the content of cr in ni and add some amount of si and cr _ ( 3 ) c _ ( 2 ) . the test of high temperature oxidation and corrosion , erosion , bonding strength , hardness , thermal cycling and thermal shock of coatings tests were carried out in this study 我們通過調整nicr合金中cr的含量，以及在nicr合金中加入適量固溶強化元素si形成新型nicr基合金涂層材料，以及加入cr _ 3c _ 2陶瓷形成nicr基金屬復合陶瓷涂層材料。

The experiments showed that wc and vc can dissolve mutually in the carbonizing reaction . when wc ' s content exceeds vc ' s , vc will dissolve into wc and make wc ' s crystal lattice bring aberrance and become wc1 - x , contrarily when vc ' s content exceeds wc ' s , wc will dissolve into vc and also make vc ' s crystal lattice bring aberrance . the surface cermet composite has high rigidity and well wear - resistance ( 7 )采用鑄造燒結技術，通過加入毗顆粒和v班一vc的原位放熱反應成功制取了碳化物陶瓷質量百分數超過60 %的表面金屬陶瓷材料，實驗證實wc與高溫碳化反應生成的vc相互可以很好的固溶，當wc的含量超過vc時， vc可以固溶到wc中，使wc的晶格發生畸變，成為昵卜: ，反之當vc的含量超過wc的含量時， wc可以固溶到vc中，也會造成vc的晶格畸變。

In this study , the preparing processes of zro2 - ni nanocrystalline composite powder aremixing the nickel salt , zirconium salt and stabilizer , solvent ( distilled water ) together to prepare the mixing solution according to certain ratio ; commingling the mixing solution , coordination solution of carboxylic ammonia , intrusion aid in accordance with certain rate to form sol , drying the sol and turning it into gel , pre - sintering the gel to get the zro2 - nio powder and gaining zro2 - ni nanocrystalline composite powder by reducing the zro2 - nio powder . xrd , x - ray wide - angle diffractometer , bet , sem , tem , hrtem analyses are used to study the zro2 - ni nanocrystalline composite powder and zro2 - ni cermet . the sintering temperature is determined 本研究的zro _ 2 - ni納米復合粉末的制備方法如下：將鎳鹽、鋯鹽、穩定劑和溶劑(水)按所需成分配成混合溶液，再將混合溶液、外加劑和氨羧絡合劑按比例混合形成溶膠，溶膠經干燥成為凝膠，凝膠經預燒得到zro _ 2 - nio納米粉，將該氧化物粉還原得到zro _ 2 - ni納米復合粉。

The infrared results showed that the ir characteristic value l080cm - lof cubic crystal sio , and the absorption peak 460cm - l of mgf , caused by the interaction between f - - mg ' + - p elastic vibration and photon radiation , appeared in the ir spectra . ellipsometric analysis showed that the typical absorption peaks 58lnm , 589nm and 606nm , resulting from the surface plasma resonance of cu panicles and reflecting the absorption on composite film system , appeared in the extinction coefficient k curves of cu ( voll5 % ) mgf , , cu ( vol20 % ) mgf , and cu ( vol30 % ) mgf , cermet films , respectively . with the component of cu increasing , the peak site presented red shift , which was in accordance to the results of ultraviolet - visible spectra 橢偏測試分析表明： cu ( vol15 ) mgf _ 2 、 cu ( vol20 ) mgf _ 2和cu ( vol30 ) mgf _ 2樣品的消光系數k曲線中出現了反映復合金屬陶瓷體系吸收的由cu金屬顆粒表面等離子體共振引起的吸收峰，峰位分別為581nm 、 589nm和606nm ，呈現紅移，這些與紫外-可見光譜測試結果相一致；此外， cu - mgf _ 2復合納米金屬陶瓷薄膜光學常數的實驗值與考慮尺寸效應修正過的mg理論值總體上符合得很好。

Duxing researching the preparation , microstructure and photoelecttic properties of cu - mgf , cermet films , the microstructure , optical and stress properties of cu films prepared by dc magnetron sputtering and mgf , by ar magnetron sputtering were also studied 作為cu又復合納米金屬陶瓷薄膜的制備、微結構及光電特性研究的基礎，研究了不同厚度直流磁控濺射cll膜和射頻磁控濺射mgf 。膜的微結構、光學常數以及應力特性。

Results show that zro2 - ni cermet has clear crystalline interface and uniform distribution . its crystal size is 0 . 3 p m . through analyzing the data of specific heat of zro2 - ni cermet , it reveals that adulterating cobalt can enhance the wetting quality of ni and zro2 用xrd 、 sem研究了zro _ 2 - ni - co金屬陶瓷的相結構和形貌，確定了合適的燒結溫度，結果表明，材料的晶粒大小和分布十分均勻，晶界清晰，粒度在0 . 3 m左右。