塗装またはコーティングされた試験片を評価するためのASTMD1654標準試験方法

ASTM D1654規格とは何ですか? 腐食環境にさらされた塗装またはコーティングされた試験片を評価するための標準試験方法1

8. Procedure A—Evaluation of Rust Creepage for Scribed Specimens
8.1 Rinse each specimen after completion of the exposure period, using a gentle stream of water at a temperature up to 45C(110°F)です。次のいずれかの方法で、基板のすべての腐食(つまり、錆の沿面距離またはアンダーカット)を観察できるように、スクライブに沿ってコーティングを除去します。
8.1.1 Method 1 (Scraping)—Scrape the specimen vigorously with and instrument described in 5.3.1.
8.1.2 Method 2 (Knife)-Pick off the loose or lifted coating with a knife described in 5.3.2.
8.1.3 Method 3 (Paint Stripper)—Soak the panels in paint stripper or suitable solvent as described in 5.3.3 until the coating around the scribe is removed, or can be removed with a spatula.
8.1.4 Method 4 (Air Blow-Of)—Holding the nozzle, as described in 5.3.4, at approximately a 45° angle, blow along the entire scribe line, disturbing the surface adjacent to the scribe adjacent to the scribe mechanically by the air nozzle to ensure an opening for the air blast.
8.1.5 Method 5 (Power Washer)—Using a power washer described in 5.3.5, remove the coating around the scribe.
8.1.6 Other methods can be used to remove loose material around the scribe if agreed upon between purchaser and seller.

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