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WikiCards · Card list · Science cards · Grain boundary
Uncommon card · Science
Grain boundary, an Uncommon card
In materials science, a grain boundary is the interface between two differently oriented grains, or crystallites, of the same phase in a polycrystalline material.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 70
- DEF
- 57
- Power
- 127
- Wikipedia reads a year
- 20,000
Power 127 (ATK + DEF): stronger than 60 % of WikiCards cards.
The facts on the card
The card carries these facts from its Wikipedia article.
- Grain boundaries are two-dimensional defects in the crystal structure, and tend to decrease the electrical and thermal conductivity of the material.
- Most grain boundaries are preferred sites for the onset of corrosion and for the precipitation of new phases from the solid.
- They are also important to many of the mechanisms of creep.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Grain boundary article was read about 20,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 70 and blocks with 57: each hit it takes is cut by 23 %.
How to get Grain boundary
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
More Science cards
Cards close in power
The cards just above and just below Grain boundary in the power ranking, all domains together.
- Thomas CajetanUncommon · Science · ATK 68 DEF 59
- Costas SimitisUncommon · History · ATK 73 DEF 54
- DiquatUncommon · Science · ATK 66 DEF 61
- Johannes OckeghemUncommon · Arts · ATK 65 DEF 62
- Max BillUncommon · History · ATK 65 DEF 62
- Nikolaus HarnoncourtUncommon · Arts · ATK 70 DEF 57
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
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- Legendary cards
- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Grain boundary (revision), CC BY-SA 4.0. Photo : Edward Pleshakov, CC BY 3.0, Wikimedia Commons.
