IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
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| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0948354
(1992-09-17)
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발명자
/ 주소 |
- Pryor Roger W. (Bloomfield Township MI) Brennan Antony B. (Gainesville FL) Adair James H. (Gainesville FL) Singh Rajiv K. (Gainesville FL)
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| 출원인 / 주소 |
- Board of Governors of Wayne State University (Detroit MI 02)
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| 인용정보 |
피인용 횟수 :
54 인용 특허 :
0 |
초록
▼
A method is provided for improving the scratch or surface wear resistance of substrates by embedding discrete, hard particles within the surface layer of the substrate. Discrete, hard particles are applied to the substrate surface and then embedded within and bonded to the surface layer of the subst
A method is provided for improving the scratch or surface wear resistance of substrates by embedding discrete, hard particles within the surface layer of the substrate. Discrete, hard particles are applied to the substrate surface and then embedded within and bonded to the surface layer of the substrate by softening the substrate surface layer by either thermal or solvent means. Suitable substrate materials include thermoplastics, thermoset plastics, polymers, glass, soft metals, and composites. Suitable hard particles include diamond, silicon dioxide, aluminum oxide, cubic boron nitride, boron carbide, silicon carbide, silicon nitride, tantalum carbide, titanium carbide, titanium nitride, tungsten carbide, and zirconia alloys containing at least one phase stabilization additive selected from the group yttrium, hafnium, calcium, magnesium, and cesium. Scratch resistant substrates or articles having discrete, hard particles embedded within the surface layer of the substrate or article are also provided. These substrates or articles essentially have the surface wear characteristics of the hard particles or material embedded within the surface layer. Thus, it is possible to prepare plastic materials or articles having significantly improved scratch or surface wear resistance without significantly increasing the weight or external dimensions of the plastic materials or articles.
대표청구항
▼
An article with improved scratch resistance, said article having discrete particles of a hard material selected from the group consisting of diamond, silicon dioxide, aluminum oxide, cubic boron nitride, boron carbide, silicon carbide, silicon nitride, tantalum carbide, titanium carbide, titanium ni
An article with improved scratch resistance, said article having discrete particles of a hard material selected from the group consisting of diamond, silicon dioxide, aluminum oxide, cubic boron nitride, boron carbide, silicon carbide, silicon nitride, tantalum carbide, titanium carbide, titanium nitride, tungsten carbide, and zirconia alloys, wherein said discrete particles are embedded within and bonded to the surface layer of the article and at least partially exposed on the surface of the article, wherein the embedded discrete particles provide improved scratch resistance to the surface of the article and wherein the article is produced by the steps of coating the surface of the article with discrete particles of the hard material; softening the surface layer of the article; embedding the discrete particles of the hard material within the softened surface layer of the article; and allowing the surface layer of the article to reharden, wherein the discrete particles of the hard material are embedded within and bonded to the surface layer of the article and at least partially exposed on the surface of the article.
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