בגי"ה תחליפים ביתיים למשחת פסיבציה.

[איל מ]

מגיגול שטחי ביותר על תהליך פסיבציה לנירוסטה לאחר ריתוך, ראיתי כי יש מספר שיטות. חלקן מבוססות על חומרים עם חומצה חנקתית, וחלקן אפילו על חומצת לימון.

האם לשימוש חובבני ולצורך קוסמטי בלבד, ניתן להשתמש בחומרים המבוססים על הנ"ל כדי למנוע חלודה של ריתוכי נירוסטה?

*אני לא אלך לקנות ג'ל מיוחד בשביל תפר של 5ס"מ פעם בשנה. (וגם לא אסע במיוחד לקחת בחינם- זה נכתב כי ברור לי שיהיו צדיקים שישר יציעו. הדיון הוא חצי תיאורטי ולמטרות העשרת הידע, גם אם על הצד החאפרי/מושבניקי של הספקטרום).

[איל מ]

הנה מה שאדון צ'אט gpt חושב על הנושא. חלק ממה שרשום שם נראה לי כמו הדרך הבטוחה ליצירת קורוזיה, אבל..
Stainless steel passivation is the process of treating stainless steel to enhance its corrosion resistance by removing free iron or contaminants from its surface and promoting the formation of a protective oxide layer (chromium oxide). While specialized chemicals like nitric acid or citric acid are commonly used for this process, there are a few household materials that can be used for a mild form of passivation. However, these methods may not provide the same level of effectiveness as professional treatments.

Here are some household materials that can help:

1. White Vinegar (Acetic Acid)
White vinegar is mildly acidic and can help clean and remove surface contaminants.
How to use: Soak the stainless steel in white vinegar for a few minutes and then scrub with a soft cloth or sponge. Rinse thoroughly and dry to prevent further oxidation.
2. Citric Acid (Lemon Juice)
Lemon juice contains citric acid, which has mild corrosive properties and can clean the surface of stainless steel.
How to use: Apply fresh lemon juice directly to the stainless steel or soak a cloth in it. Rub the surface gently and rinse with water afterward.
3. Baking Soda (Sodium Bicarbonate)
Baking soda is abrasive and can remove dirt, grime, and light oxidation. It also helps in mildly neutralizing acids.
How to use: Make a paste by mixing baking soda with water, apply it to the stainless steel surface, and scrub gently with a soft cloth or sponge. Rinse well afterward.
4. Hydrogen Peroxide
Hydrogen peroxide can act as a mild oxidizing agent, helping to remove contaminants and promoting the formation of a thin protective oxide layer.
How to use: Spray hydrogen peroxide on the stainless steel surface, let it sit for a few minutes, and then wipe it clean with a damp cloth.
5. Saltwater Solution
A saline solution can be used to help remove free iron particles from the surface, though it is not as effective as acid-based passivation.
How to use: Dissolve salt in warm water, soak a cloth in the solution, and wipe the stainless steel. Rinse thoroughly afterward.
Important Considerations:
These methods are not as strong as professional passivation processes using nitric or citric acid, but they can help clean and improve the corrosion resistance of stainless steel to some extent.
Always dry the stainless steel after cleaning to prevent water spots or further oxidation.
For more effective and long-lasting results, especially for critical applications, professional passivation or treatment might still be necessary.
Let me know if you need more detailed instructions!