Modification of Ceramic Powders by Utilizing Organic-Inorganic Hybrid Interface

利用有机-无机杂化界面对陶瓷粉末进行改性

• 批准号: 10555219
• 负责人: EGASHIRA Makoto
• 金额: $ 7.68万
• 依托单位: Nagasaki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B).
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-10555219/
• 关键词: surface chemical modification; metal nitride; dicarboxylic acid; ceramic monolayer; mesoporous tin dioxide; surfactant; semiconductor gas sensor; diethoxydimethylsilane; LB膜; 単粒子膜; メソポーラス酸化スズ; セチルピリジニウムクロリド; SnO_2センサ; リン酸; 窒化アルミニウム; 焼結助剤のイオ

Preparation of various new functional meterials and improvement of its properties were attempted as below.1.Chemical stability of metal nitride powders against water was improved by surface chemical modification with sebacic acid, while maintaining a hydrophilic surface. Treatment of the sebacic acid-modified powder with yttrium acetate resulted in strong immobilization of Y^<3+> ions, as a sintering aid, at a highly dispersive level on the metal nitride powder surface through ion exchange. By selecting slip compositions for better deflocculation and firing conditions, a thermal conductivity of ca.250 W m^<-1>K^<-1> was attained by the pressureless sintering of AIN at 1900℃ for 5h.2.Closely packed monolayer of spherical oxide perticles of sub-micron size was fabricated on a silicon or glass substrate by employing a Langmuir-Blodgett film of 1, 12-dodecanedicaboxylic acid, followed by dehydration-condensation reatcion between carboxyl groups of the dicarboxylic acid and the surface hydroxyl groups of both the substrate and the ceramic spheres.3.Ordered mesoporous SnO_2 powders with high thermal stability and a high surface area 305 m^2g^<-1> were prepared from sodium stannate by utilizing the self-assembly of n-cetylpyridinium chloride, followed by treatment with phosphoric acid and calcinations at 600℃ for 5h.4.SnO_2 powder was subjected to surface chemical modification with diethyoxydimethylsilane and the gas sensing properties were evaluated. The SiO_2 introduced by the surface modificaton was found to exist as a grain-boundary phase from TEM observation. The limitation of neck growth between SnO_2 particles by the SiO_2 thin film coating is anticipated to be responsible for increasing the potential barrier height and improving the sensing properties to inflammable gases such as H_2, CH_4 and C_3H_8.

在下面尝试了各种新的ATS特性的准备。1。Metride Powd ER的化学稳定性通过用脂肪酸进行表面化学修饰而改善，同时维持乙酸含量的D-Modified粉末。 <3+>作为高度设计，通过离子交换。在1900°C下进行5H.2。 - 二羧基的孔基团在底物的表面羟基和焦糖球的表面上进行了重新构造。3。订购的中孔SNO_2粉末高稳定性高稳定性和高表面积305 m^2g^2g^2g^<-1>通过使用氯化吡啶的自我体质，然后用​​磷酸处理，并在600℃上进行5H。例如H_2，CH_4和C_3H_8。

项目成果

Simizu, Yasuhiro: "Monolayer Packing of Sub-Micron Ceramic Spheres by Employing a Langmuir-Blodgett Film of Dicarboxylic Acid"J.Am.Ceram.Soc.. 84-2. 301-306 (2000)

Simizu、Yasuhiro：“采用二羧酸 Langmuir-Blodgett 薄膜对亚微米陶瓷球进行单层堆积”J.Am.Ceram.Soc. 84-2。

Y.Shimizu: "Surface Modified Silicon Nitride Powder with Highly Dispersed Sintering Aid via Aqueous Processing"Y.Ceram.Soc.Japan. Vol.108 No.9. 790-794 (2000)

Y.Shimizu：“通过水处理使用高度分散的烧结助剂进行表面改性的氮化硅粉末”Y.Ceram.Soc.Japan。

Shimizu, Yasuhiro: "Ion-Exchange Loading of Yttrium Acetate as a Sintering Aid on Aluminum Nitride Powder via Aqueous Processing"J.Am.Ceram.Soc.. 83-11. 2793-2797 (2000)

Shimizu、Yasuhiro：“通过水处理将醋酸钇离子交换负载在氮化铝粉末上作为烧结助剂”J.Am.Ceram.Soc. 83-11。

Y.Shimizu: "Monolayer Packing of Sub-Micron Ceramic Spheres by Employing a Langmuir-Blodgett Film of Dicarboxylic Acid"J.Am.Ceram.Soc.. Vol.84 No.2. 301-306 (2001)

Y.Shimizu：“采用二羧酸的 Langmuir-Blodgett 薄膜进行亚微米陶瓷球的单层堆积”J.Am.Ceram.Soc.. Vol.84 No.2。

和田憲治: "ジエトキシジメチルシランゾル溶液で浸漬処理したPd/SnO_2センサーのガス検出特性"J.Ceram.Soc.Japan. 106巻6号. 621-626 (1998)

Kenji Wada：“浸入二乙氧基二甲基硅烷溶胶溶液中的 Pd/SnO_2 传感器的气体检测特性”J.Ceram.Soc.Japan，第 106 卷，第 6.621-626 期（1998 年）。