Accession Number:

ADA090312

Title:

Hot Erosion of Glass.

Descriptive Note:

Interim rept.,

Corporate Author:

NATIONAL BUREAU OF STANDARDS WASHINGTON DC FRACTURE AND DEFORMATION DIV

Personal Author(s):

• Wiederhorn,S. M.
• Hockey,B. J.

Report Date:

1980-06-01

Pagination or Media Count:

15.0

Abstract:

In this paper the effect of plastic flow on the erosion of soda-lime-silicate glass at elevated temperatures is investigated. Although the erosion of glass at 500 C and 600 C is still basically a brittle process, viscous relaxation of glass during impact reduces the driving force for fracture and thus the size of the chips that are formed during erosion. As a result, the erosion rate of glass at 500 C or 600 C is decreased by a factor of 2 compared to that measured at room temperature. To completely eliminate fracture during erosion, a temperature of approximately 800 C is estimated for soda-lime-silicate glass. Author

Descriptors:

• *GLASS
• *HEAT TREATMENT
• *EROSION
• HIGH TEMPERATURE
• ELASTIC PROPERTIES
• RATES
• ROOM TEMPERATURE
• BRITTLENESS
• PLASTIC PROPERTIES
• FORCE(MECHANICS)
• CALCIUM OXIDES
• SILICA GLASS
• STRESS RELAXATION
• ALKALI GLASS

Subject Categories:

• Ceramics, Refractories and Glass

Distribution Statement:

APPROVED FOR PUBLIC RELEASE