The Study on the fabrication of self-lubricant ceramics with high-hardness and surface modification of metals by their ceramics.

高硬度自润滑陶瓷的制备及陶瓷对金属表面改性的研究。

• 批准号: 13650789
• 负责人: NOSE Masateru
• 金额: $ 2.56万
• 依托单位: Takaoka National College
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650789/
• 关键词: h-BN; Zr-N; Cr-B-N; Ti-N; Pulse Current Pressure Sintering; Tribological characteristics; Reactive sputtering; CrBN; 摩擦磨耗特性; メカニカルアロイング; 硬度; 摩擦係数

We tried to fabricate self-lubricant composite ceramics consisting of transition metal nitride (TiN or ZrN) matrixes and hexagonal boron nitride (h-BN) dispersions. Mixture powders were milled with a planetary ball mill for not more than 180ks. Xray-diffraction patterns for the mixed powder showed that h-BN powder was finely grounded smaller than a submicron level and dispersed by the milling for longer than 36ks. The pulse current pressure sintering (PCPS) method was employed in order to consolidate the mixed powders. Relatively high density consolidation of more than 90% for single ZrN (or TiN) compact was obtained from the sintered compact of ZrN + 5mass % h-BN powders milled for 180ks. The hardness of the sintered compacts decreased with the addition of BN of more than 5 mass%. This result suggests that the sintering of mixed powder could be strongly inhibited by the addition of h-BN.Sliding friction tests between sintered compacts of composite ceramics and SUJ-2 steel ball were performed using a ball-on-disc apparatus, in order to estimate the tribological characteristics of sintered compacts by the friction coefficient evolution. Only a 5% addition of h-BN into the ZrN matrix showed a marked decrease in the friction coefficient to about 0.2, preventing adhesive wear. The sintered compact of ZrN-5 mass% h-BN powders milled for 180ks maintained low friction coefficient for two-times longer compared to the sintered compact of ZrN-5 mass% h-BN mixed powders. However, finer dispersion of h-BN particle under the range of nanometer size is essential to sustain the self-lubricant effect for longer time to be practical.Cr-B, Cr-B-N and Cr-B/Cr-B-N multilayer films were synthesized by reactive sputtering. Cr-B-N films contain Cr2B and h-BN phase with a small amount of other phases. Friction coefficient of Cr-B/Cr-B-N multilayer exhibited an intermediate value of 〜0.45 between those of Cr-B (0.9) and Cr-B-N (0.2).

我们试图制造由过渡金属氮化金属（TIN或ZRN）基质和六边形氮化物（H-BN）分散剂组成的自润滑复合陶瓷。混合粉末用行星球厂的铣削不超过180K。混合粉末的X射线 - 分流图显示，H-BN粉末小于亚微米水平小的接地，并被铣削散布的36ks超过36K。携带脉冲电流压力烧结（PCP）方法以巩固混合粉末。从ZRN + 5mass％H-BN粉末的烧结的紧凑型获得了较高的单个ZRN（或TIN）紧凑型的相对较高的密度合并超过90％。烧结的紧凑型的硬度随着BN的添加超过5质量％而降低。该结果表明，使用H-BN的H-BN添加混合粉末可以强烈抑制混合粉末。为了估算摩擦系数的进化，使用圆盘上的圆锥形装置进行了烧结的复合陶瓷和Suj-2钢球之间的摩擦测试。 ZRN基质中只有5％的H-BN添加5％的H-BN显示出明显的摩擦系数降低至约0.2，从而防止了粘合剂磨损。与Zrn-5 Mass％H-BN混合粉末的烧结的紧凑型相比，在180K的ZRN-5质量％H-BN粉末粉碎的摩擦系数较长两倍。然而，在纳米尺寸范围内，H-BN粒子的最终分散对于维持更长的时间的自润润滑效果至关重要。CRCR-B，CR-B-N和CR-B/CR-B/CR-B/CR-B-N多层膜是通过反应性溅射合成的。 CR-B-N膜包含CR2B和H-BN相，具有少量其他相。 CR-B/CR-B-N多层的摩擦系数暴露于Cr-B（0.9）和Cr-B-N（0.2）之间的中间值〜0.45。

项目成果

M. Nose, H. Suzuki, T. Nagae, S. Tomida, M. Yokota and K.Nogi: "Fabrication of ZrN-hBN Composite Ceramics by Pulse Current Pressure Sintering and their Tribological Behavior (in Japanese)"Journal of the Japan Society of Powder and Powder Metallurgy,. Vol.

M. Nose、H. Suzuki、T. Nagae、S. Tomida、M. Yokota 和 K.Nogi：“通过脉冲电流压力烧结制备 ZrN-hBN 复合陶瓷及其摩擦学行为（日文）”Journal of the Japan

野瀬正照, 長柄毅一, 鈴木宏章, 冨田正吾, 横田 勝, 野城 清: "PCPS法による遷移金属窒化物とhBNとの複合セラミックスの作製"粉体および粉末冶金. 49巻10号. 922-927 (2002)

Masateru Nose、Koichi Nagara、Hiroaki Suzuki、Shogo Tomita、Masaru Yokota、Kiyoshi Noshiro：“通过 PCPS 法制备过渡金属氮化物和 hBN 复合陶瓷”粉末和粉末冶金，第 49 卷，第 10 期，922-927。 2002）

M. Nose, T. Nagae, H. Suzuki, S. Tomida, M. Yokota and K. Nogi: "Fabrication of ZrN-hBN Composite Ceramics of Transition Metal Nitride and h-BN by Pulse Current Pressure Sintering (in Japanese)"Journal of Japan Institute of Metals,. Vol.63, No.7. 922-927

M. Nose、T. Nagae、H. Suzuki、S. Tomida、M. Yokota 和 K. Nogi：“通过脉冲电流压力烧结制备过渡金属氮化物和 h-BN 的 ZrN-hBN 复合陶瓷（日语）”

野瀬正照, 鈴木宏章, 長柄毅一, 冨田正吾, 横田 勝, 野城 清: "PCPS法により作製したZrN-hBN複合セラミックスと摩擦摩耗特性"粉体および粉末冶金. 49巻10号. 915-921 (2002)

Masateru Nose、Hiroaki Suzuki、Koichi Nagara、Shogo Tomita、Masaru Yokota、Kiyoshi Noshiro：“PCPS法制备的ZrN-hBN复合陶瓷及其摩擦磨损性能”《粉末与粉末冶金》，第49卷，第10期。915-921。 (2002)