The ASTM C777 test method is used to measure the sulfide resistance of ceramic decorations on glass to ensure their durability. This test qualitatively determines the degree of attack upon a ceramic decoration item by a nominal 4% acetic acid solution containing 1 mL of saturated sodium sulfide solution per 100 mL of the acetic acid solution, through a visual assessment. ASTM C777 (Standard Test Method for Sulfide Resistance of Ceramic Decorations on Glass) also gives an indication of performance when the decorations are subjected to sulfide attacks.
ASTM C777 Sulfide Resistance of Ceramic Decorations on Glass
What is ASTM C777?
ASTM C777 Equipment and Sample Preparation Guide
A glass (of known resistance) with ceramic decorations is used as an ASTM C777 test specimen. A test container, heating equipment, balance, safety gear, and a fume hood are required for this testing. The chemicals required for this test are acetic acid, sodium sulfide, and distilled water.
What are the Testing Procedure and Requirements for ASTM C777?
The analyst immerses the specimen in a 4% acetic acid solution containing 1 mL of saturated sodium sulfide solution per 100 mL of acetic acid solution, according to ASTM C777, using a suitably closed container at room temperature. The analyst keeps a duplicate piece of ware (not exposed to the solution) with the decoration under study to help measure the degree of chemical activity on the test specimen. After 15 minutes, the analyst removes the specimen from the solution and allows it to air-dry. After another 15 minutes, the analyst examines the specimen to determine the severity of the attack.
Analysis Results and Interpretation
The ASTM C777 test method is used to measure the sulfide resistance of ceramic decorations on glass in order to ensure their vital durability.
The specimen being tested, as well as the decorating substance utilized in ASTM C777, must be recognized. The degree of attack is graded according to the following visual test grades:
- No signs of chemical attack.
- When viewed at a 45° angle, there is an appearance of stain on the surface, although it is not visible if the angle is less than 30°.
- A distinct stain that does not distort reflected light.
- The surface is dull or matte, with the possibility of chalking.
FAQ
Where can I get the astm c777 tested?
You can share your astm c777 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm c777 test to various testing techniques.
How much do I need to pay for the astm c777 test?
Please contact us for a detailed quote for your astm c777 testing needs. Cost incurred to carry out different astm c777 testing methodology depends on the type of raw material; number of samples, coupons, or specimens; test conditions, turn around time etc. Costs of some ASTM testing methods start from $100 and the final value depends upon the factors listed above. Please contact us for the best and latest prices.
How many samples are required for astm c777?
The required number of samples or specimens should comply with the procedure given in the astm c777 standard. However, the MaTestLab operations team can assist you for your special requirements once you share your testing details with us.
How much discount can I get on the astm c777 test?
MaTestLab has a vast testing laboratory network, hence we bring you the best testing facilities in a cost-effective way. We offer considerable discounts (15-20%) to our returning customers based on test volume and frequency.
How many days will it take to complete the astm c777 test?
The turnaround time for astm c777 test methodology depends upon the test procedure mentioned in the standard test document. However, we at MaTestLab understand your research requirements and hence try to get your test completed within the least possible time.
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