Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for preparing inertia mucleation self-callus compound coating

A composite coating and self-healing technology, which is applied in the direction of coating, manufacturing tools, casting and molding equipment, etc., can solve the problems of excellent performance degradation and other problems

Inactive Publication Date: 2005-06-29
XIAN UNIV OF TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of preparing bulk materials, low-dimensional materials must be heated, so that the excellent properties obtained in the rapid solidification process will be reduced to varying degrees.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing inertia mucleation self-callus compound coating
  • Method for preparing inertia mucleation self-callus compound coating
  • Method for preparing inertia mucleation self-callus compound coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047]The present invention will be further described below in conjunction with the accompanying drawings and the examples completed by the inventors using the above-mentioned technical solutions.

[0048] 1) The wax mold and shell are prepared by common investment casting process.

[0049] 2) Base coat binder A 4 The preparation of the preparation: the selection of ethyl silicate hydrolyzate sol as the binder is mainly based on two considerations: (i) SiO with amorphous structure can be obtained after hydrolysis of TEOS 2 sol, the sol has good high-temperature bonding properties; (ii) by controlling TEOS, C 2 h 5 OH, HCl and H 2 Proportion of O, SiO 2 After the sol is aged and heat-treated, a stable glassy structure can be obtained. In this way, the glassy binder plus the glassy matrix coating can form an inert nucleation coating that inhibits the nucleation of high-temperature melts; (iii) TEOS, C 2 h 5 OH, HCl and H 2 The ratio of O is very important for the preparat...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
radiusaaaaaaaaaa
radiusaaaaaaaaaa
radiusaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing a metal melt deep supercooled rapid solidification inert nucleation coating. Using the shell mold prepared by the coating, the purified deep supercooled metal melt is poured into the coating mold Among them, the undercooling degree of the supercooled melt can be inherited more than 90%, and the coating itself has nucleation inertness to the purified metal melt. The coating consists of two layers: the aggregate of the base coating is quartz glass powder and a small amount of boric acid, and the binder is sol A formed after hydrolysis of orthosilicate ethyl 4 . The top coat is made of A 6 solution formed, A 6 After the coating formed by the solution is vitrified for 60 minutes at 900°C, and then self-healed at 1400°C to 1500°C for 1 hour, a smooth glass surface coating can be formed. The coating is kept at 1500±5°C for 60 minutes without devitrification, and the maximum service temperature of the coating is 1600°C.

Description

technical field [0001] The invention relates to a preparation of a coating, in particular to a preparation of an inert nucleation coating for a metal melt, in particular to a preparation method for a mold coating which inhibits the heterogeneous nucleation of a metal melt on a mold wall. Background technique [0002] As we all know, rapid cooling and rapid solidification can be used to prepare low-dimensional materials with excellent properties, which can be further prepared into bulk materials through subsequent processes such as extrusion and rolling. However, in the process of preparing bulk materials, low-dimensional materials must be heated, so the excellent properties obtained in the rapid solidification process will be reduced to varying degrees. [0003] Studies have shown that deep subcooling and rapid solidification of alloy melts has the same solidification mechanism as rapid cooling and rapid solidification, and rapid solidification bulk materials can be directly...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B22C3/00
Inventor 郭学锋张忠明
Owner XIAN UNIV OF TECH