PCB A na-akpata corrosion site na ọtụtụ ihe dị iche iche, dịka:

* Ikuku corrosion

* Localized corrosion

* electric corrosion

* Electrolytic corrosion

* Electrolytic dendrite nhazi

* Fretting corrosion

* corrosion intergranular

Circuit board corrosion can be extremely harmful to printed circuit boards, and while there are many reasons for PCB corrosion, there are several ways to clean them using traditional household products such as baking soda and compressed air.

Precautions can also be taken to ensure that PCB corrosion does not occur in the future.

Kedu ihe na-ebute PCB corrosion?

Corrosion bọọdụ sekit nwere ike imerụ PCB kpamkpam, wee mee ka ọ bụrụ ihe efu. This corrosion can be caused by a variety of causes. It is an oxidation process that occurs when oxygen combines with the metal and causes rust and spalling.

Mmebi ikuku nke ikuku

Atmospheric corrosion, the most common type of PCB corrosion, involves the metal being exposed to moisture, which in turn exposes it to oxygen. Ngwakọta nke ihe ndị a na-ebute mmeghachi omume nke ion metal na-ejikọta na ikuku oxygen na-etolite oxides.

Atmospheric corrosion occurs mainly on copper assemblies. Ọ bụ ezie na ọla kọpa na-ejigide ihe eji arụ ọrụ ya ọbụna mgbe ọ mebiri emebi, ọ naghị ejidekwa conductivity eletrik ya.

Corrosion mpaghara

Corrosion mpaghara dị ka ụdị corrosion izugbe ọ bụla, belụsọ na ọ na-emetụta oke mpaghara ma ọ bụ obere mpaghara. This corrosion may include filamentous corrosion, crevice corrosion and pitting corrosion.

Electric corrosion

Ụdị nrụrụ a na-eme n’ebe dị iche iche dị iche iche ọla na electrolytes, ebe metal na-eguzogide corrosion na-emebi ngwa ngwa karịa metal ala nke a na-ekpughere ya.

Electrolytic corrosion

Electrolytic corrosion occurs when the dendrite grows due to contact traces. Mmụba a na-eme mgbe mmiri ionic emeru emeru na-abanye na voltaji n’etiti akara abụọ ahụ. Na-atụgharị na eriri ígwè ahụ kpatara obere sekit.

Electrolytic dendrite guzobere

Nlekọta elektrọnik dendrite na -eme mgbe enwere mmetọ ion na mmiri. Nrụrụ a ga-eme ka akara ọla kọpa ọ bụla dị n’akụkụ nwere voltaji dị iche iche na-eto ibe ígwè, nke ga-emecha mee ka obere sekit dị n’etiti akara.

Micro corrosion

Iwe bụ ihe na -esite na ịgbanyụ ọkụ tinning na -aga n’ihu. Ntugharị a na-emepụta ihe nhicha nke na-emecha wepụ oyi akwa oxide n’elu. When this happens, the layer beneath it oxidizes and forms excessive rust that interferes with the operation of the switch.

Ọkpụkpụ intergranular

This final corrosion involves the presence of chemicals at the grain boundaries of the copper trace, and corrosion occurs because the grain boundaries are more susceptible to corrosion due to their higher impurity content.

Kedu ka esi ewepụ corrosion na PCB?

Ka oge na -aga, ihe karịrị corrosion nwere ike ịkpakọba na PCB gị. Unyi, uzuzu na unyi di iche iche na -abanye ngwa elektrọnik gị ngwa ngwa. Cleaning them can help prevent corrosion. Agbanyeghị, ọ bụrụ n’ịchọpụta na PCB emebiela, ị nwere ike mụta otu esi ewepụ corrosion wee jiri usoro ndị a iji zere mmebi na-adịgide adịgide.

Jiri ikuku mkpakọ

Ikuku ekpokọtara ọnụ bụ ngwa a na-ahụkarị maka nhicha eletrọnịkị. Ị nwere ike iji ikuku abịakọrọ site na ịhapụ mkpirisi mkpirisi n’ime ime ikuku. A na-atụ aro usoro nhicha a maka nlekọta eletrọnịkị oge niile, yabụ ọ bụrụ na ịchọrọ ịnagide corrosion, ị ga-achọ ịgbanye ngwa elektrọn wee kụọ ha na isi iyi.

Jiri mmiri soda

Baking soda is a highly effective ingredient for removing PCB corrosion. Ọbụghị naanị nke ahụ, mana kọbọd kichin gị nwere ike nweelarị soda. Because baking soda is moderately abrasive, you can use it to scrub away corrosion and residue that won’t be released by compressed air. Gbalịa iji ya na ahịhịa dị nro na mmiri distilled.

Jiri mmiri gbajiri agbaji

N’ikwu okwu banyere mmiri distilled, ngwaahịa a bụkwa ụzọ dị mma isi wepụ corrosion na mbadamba sekit n’enweghị nsogbu. The purest distilled water will not degrade or damage your electronics. Ọ bụkwa onye nduzi jọgburu onwe ya, n’ihi ya, ọ dịghị ihe mere ị ga-eji na-echegbu onwe gị.

Use household cleaners

Ihe nhicha ụlọ ọ bụla bụ ezigbo ngwọta maka corrosion PCB, mana ọ bụrụ na ọ nweghị phosphates. Phosphates na-arụ ọrụ nke ọma n’igbochi corrosion, mana ọ bụ isi iyi mmetọ na ọdọ mmiri America na United States dum. However, there are so many phosphate-free cleaners that work just fine. Enwekwara ihe mkpocha PCB pụrụ iche n’ahịa.

Jiri ahịhịa

Ahịhịa nwere ike bụrụ nnukwu ihe bara uru mgbe ị na -asacha bọọdụ sekit, ebe ọ na -enyere gị aka ịbanye n’etiti obere ihe niile. Ịhọrọ ahịhịa nwere bristles dị nro dị mkpa. Ogo dịkwa mkpa, dịka ịchọrọ ka ị nwee ike nweta oghere niile kacha nta.

Most people like to use a toothbrush or paint brush. They’re sturdy and gentle, and most people already own at least one of them.

A non-flaring microfiber cloth is also a good tool to wipe and dry the board immediately after cleaning.

How do you prevent corrosion on the circuit board?

Different metals have different levels of corrosion risk. Ọ bụ ezie na ha niile nwere ike imebi emecha, ọla kọpa na ọla ndị ọzọ na-emebi emebi ngwa ngwa karịa ọla dị oke ọnụ ahịa na ụfọdụ alloys. The latter is more expensive, so many professionals will stick with the more common metal, so it is necessary to know how to prevent PCB corrosion without damaging its board.

A simple way to prevent corrosion on a circuit board is to place a coating on the exposed copper area. There are many different types of coatings, including epoxy coatings, aerosol spray coatings and flux inhibitors.

I kwesịkwara ịgbalị izere mmiri mmiri gburugburu PCB. Try to keep them in an environment that is not affected by humidity. Ị nwere ike dozie nsogbu a site na iji humidifier n’otu ọnụ ụlọ. But knowing how to prevent PCB corrosion is the first step to success.

ọgwụgwụ

Corrosion on circuit boards naturally occurs at some point in the life of an electronic device. Ọ bụ ezie na anyị anaghị ezere iji ya eme ihe kpamkpam, anyị nwere ike ịme usoro ịgbatị ndụ nke ngwa elektrọnik site na igbochi nsị na ịgwọ ha nke ọma. It’s easy to learn how to clean a corroded circuit board, but it’s essential.