Glass for magnetic recording medium substrate, glass substrate for magnetic recording medium, and their use
a technology of magnetic recording medium and substrate, which is applied in the direction of glass tempering apparatus, record information storage, synthetic resin layered products, etc., can solve the problems of poor surface hardness and rigidity, limited ability to react, and deterioration of magnetic characteristics due to thermal fluctuation, etc., to achieve good impact resistance and high heat resistance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
Problems solved by technology
Method used
Examples
examples
[0224]The present invention is described in greater detail below through Examples. However, the present invention is not limited to the embodiments shown in Examples.
[0225](1) Preparation of Glass Melts
[0226]Oxides, carbonates, nitrates, hydroxides, and other starting materials were weighed out and mixed in a manner calculated to yield glasses of the various compositions shown in Tables 2 to 4 to obtain blended starting materials. Each of the starting materials was charged to a melting vessel, heated, melted clarified, and stirred for 3 to 6 hours within a range of 1,500 to 1,600° C. to prepare a homogeneous glass melt free of bubbles and unmelted materials that was then molded. Eight glasses were obtained. No bubbles, unmelted materials, crystal precipitation, or contaminants in the form of refractory materials constituting the melting vessel were found in the glasses Nos. 1 to 16 that were obtained.
[0227](2) Preparation of Substrate Blanks
[0228]Next, disk-shaped substrate blanks w...
PUM
Property | Measurement | Unit |
---|---|---|
glass transition temperature | aaaaa | aaaaa |
glass transition temperature | aaaaa | aaaaa |
glass transition temperature | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap