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Transition metals, alloys and corrosion

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Question 9

Titanium alloys are commonly used in medicine to manufacture orthopedic implants, such as hip joint replacements.

The table below compares some properties of pure titanium with a titanium alloy (Ti-6Al-4V).

SubstanceDensity in g/cm3\text{g/cm}^3g/cm3Relative hardnessResistance to corrosion in saline
Pure Titanium4.51LowHigh
Titanium Alloy (Ti-6Al-4V)4.43Very HighExtremely High

Explain, using the information in the table, why the titanium alloy, rather than pure titanium, is preferred for making orthopedic hip implants.

[3]

Transition metals, alloys and corrosion Questions

  1. GCSE
  2. /Chemistry
  3. /Transition metals, alloys and corrosion

Practise Edexcel GCSE Chemistry Transition metals, alloys and corrosion with exam-style questions for Foundation and Higher tier. 97 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

Question bank